Table of Contents

Díkài Tóngchóu: 敌忾同仇 - Sharing Hatred For The Enemy

Quick Summary

Keywords: 敌忾同仇, dí kài tóng chóu, Chinese idiom, shared hatred, united against enemy, Chinese four-character idiom, 恨, enemy, unity, collective anger, national unity

Summary: 敌忾同仇 (dí kài tóng chóu) is a classical four-character Chinese idiom that literally translates to “shared hatred for the enemy” or “united in common animosity.” This powerful expression encapsulates the concept of collective indignation—where individuals put aside their differences to stand together against a perceived threat or adversary. Originally emerging from ancient Chinese military philosophy and literary traditions, 敌忾同仇 has evolved into a versatile expression used in modern contexts ranging from patriotic rhetoric to diplomatic discourse. The term carries significant emotional weight and is often deployed in speeches, official documents, and media commentary when nations or groups need to rally public sentiment against external pressures. Unlike simpler expressions of anger, 敌忾同仇 implies a noble, almost righteous quality to the shared hatred—it suggests that the collective anger is justified and that unity in the face of opposition is a virtue. For English speakers learning Chinese, understanding 敌忾同仇 offers insight into how Chinese culture conceptualizes group identity, enemy perception, and the rhetorical power of unified emotional responses.

Part 1: The Soul of the Word

Core Information

Pinyin: dí kài tóng chóu

Characters Breakdown:

Character Pinyin Meaning
敌 (dí) enemy, adversary
忾 (kài) kài hatred, anger, resentment
同 (tóng) tóng same, together, shared
仇 (chóu) chóu enmity, hatred, revenge

Part of Speech: Four-character idiom (成语, chéngyǔ), functions as an adjective or adverbial phrase

HSK Level: Advanced (HSK 5-6 range), typically not included in standard HSK vocabulary lists but commonly encountered in literary and formal Chinese

Concise Definition: To share a common hatred for the enemy; united in collective anger against a common adversary

Literary Meaning: “To have the same hatred as the enemy has for us” or more freely translated as “united in sharing animosity toward the opponent”

The "In a Nutshell" Concept

If 敌忾同仇 were a scene from a movie, it would be the moment when a diverse group of people who have been bickering and fighting amongst themselves suddenly turn to face a common threat. Picture the final act of an action film where former rivals lock arms, setting aside years of grudges because the bigger enemy has arrived. That moment of unified defiance—that is the essence of 敌忾同仇.

The term carries an almost theatrical quality in Chinese discourse. It is not merely about being angry; it is about being angry together, with a sense of moral purpose. When Chinese state media deploys 敌忾同仇, they are not just reporting that citizens are upset—they are framing that anger as noble, justified, and collective. The phrase transforms individual irritation into a patriotic virtue.

What makes 敌忾同仇 particularly interesting is its dual nature. On one hand, it represents division—separating “us” from “them,” identifying enemies, and nurturing hostility. On the other hand, it represents unity—the coming together of people who might otherwise be divided. The term essentially says: “Forget our internal squabbles; we are all united in opposing this external threat.”

In modern China, 敌忾同仇 often appears in contexts involving territorial disputes, trade tensions, or diplomatic standoffs. It serves as a rhetorical tool to mobilize public sentiment and project an image of national solidarity. The expression suggests that any external pressure or criticism is not just a policy disagreement but an attack that should be met with unified resistance.

Evolution and Etymology

The origins of 敌忾同仇 can be traced to classical Chinese texts, though its exact birth date remains debated among scholars. The term appears to be a compound of two related concepts that were originally expressed separately.

The first component, 敌忾 (dí kài), appears in ancient texts meaning “enmity toward the enemy” or “hatred befitting an enemy.” This concept is deeply rooted in pre-Qin dynasty (先秦, xiān qín) military philosophy, where distinguishing between friend and foe was considered fundamental to statecraft and warfare. Ancient Chinese military theorists emphasized that a cohesive state required a clear enemy to unite against.

The second component, 同仇 (tóng chóu), meaning “shared hatred” or “common enemy,” has even older roots. The concept appears in the Classic of Poetry (诗经, shī jīng), China's oldest poetry collection, where expressions of shared grievance against oppressors can be found. The notion of 同仇 was considered essential for military morale—soldiers who fought alongside comrades who shared their hatred were believed to be more effective.

The combining of these two concepts into the unified phrase 敌忾同仇 likely occurred during the Han dynasty (汉朝, hàn cháo, 206 BCE – 220 CE) or later periods, as four-character idioms became increasingly popular as rhetorical and literary devices. The structure of the idiom follows classical Chinese parallelism, where the first two characters (敌忾) mirror the second two characters (同仇) in grammatical and conceptual balance.

Throughout Chinese imperial history, 敌忾同仇 was used primarily in military and political contexts. Generals would invoke the term to rally troops before battle, arguing that shared hatred for the enemy would strengthen combat effectiveness. Court scholars employed the expression in memorials to the emperor, advocating for unified responses to foreign threats.

The modern usage of 敌忾同仇 expanded significantly after the founding of the People's Republic of China in 1949. The Communist Party frequently employed the term during periods of international tension, particularly during the Korean War (1950-1953), the Cold War period, and later during diplomatic standoffs with Western powers. In contemporary usage, 敌忾同仇 appears regularly in official media, political speeches, and social media commentary, maintaining its classical resonance while adapting to modern contexts.

Part 2: Deep Contextual Mapping (The Comparison Table)

Understanding how 敌忾同仇 relates to similar expressions is crucial for mastering its usage. The following table compares 敌忾同仇 with related terms that also involve concepts of shared anger or united opposition.

Term Nuance Intensity Typical Scenario
敌忾同仇 (dí kài tóng chóu) Shared hatred for a common enemy; implies righteous, almost patriotic anger united against external threat 9/10 Nationalistic speeches, diplomatic tensions, calls for unity against foreign pressure
同仇敌忾 (tóng chóu dí kài) Literally “shared hatred for the enemy”; essentially synonymous but with reversed word order; slightly more commonly used in modern speech 9/10 Similar to 敌忾同仇, often used interchangeably in patriotic and military contexts
万众一心 (wàn zhòng yī xīn) “Millions of people, one heart”; emphasizes unity and cohesion but without the element of hatred or enemy focus 7/10 Unity campaigns, disaster relief efforts, national celebrations
众志成城 (zhòng zhì chéng chéng) “Unity of will forms a fortress”; focuses on collective determination achieving great things, typically positive connotation 6/10 Construction projects, overcoming challenges, collective achievement
义愤填膺 (yì fèn tián yīng) “Righteous indignation fills the chest”; personal feeling of moral outrage, does not necessarily imply collective action 7/10 Individual responses to injustice, witnessing wrongdoing
同舟共济 (tóng zhōu gòng jì) “Crossing the same river in the same boat”; emphasizes mutual cooperation in adversity, no hatred component 5/10 Economic hardship, natural disasters, collaborative challenges

The key distinction between 敌忾同仇 and its close variant 同仇敌忾 lies primarily in word order and modern frequency of use. Both expressions carry identical meaning and emotional weight, but 同仇敌忾 appears slightly more often in contemporary Chinese media and official discourse. The choice between the two often comes down to rhythm and parallelism in the surrounding text rather than semantic differences.

Compared to expressions like 万众一心 and 众志成城, 敌忾同仇 is distinctly darker in emotional tone. While those terms emphasize positive unity and determination, 敌忾同仇 centers on antagonism toward an enemy. This makes 敌忾同仇 particularly suited to contexts involving conflict, competition, or perceived threats, but less appropriate for purely positive scenarios like celebrations or cooperative achievements.

The intensity rating of 9/10 reflects the term's powerful emotional charge. 敌忾同仇 is not a neutral expression—it always carries an undercurrent of hostility and division. This intensity makes it impactful in rhetoric but also means it should be used with caution in diplomatic or business contexts where maintaining positive relations is important.

Part 3: The Social Playbook (Modern China Usage)

Where It Works (and Where It Fails)

The Workplace

In professional settings within China, 敌忾同仇 is surprisingly versatile, though its usage follows distinct patterns depending on workplace culture and hierarchy.

In traditional Chinese companies, particularly state-owned enterprises (国有企业, guó yǒu qǐ yè) and government institutions, 敌忾同仇 often appears in internal communications during periods of external competition or market challenges. A department head might invoke 敌忾同仇 to unite team members against a rival company's aggressive pricing strategy or to rally staff during a difficult merger. In these contexts, the term serves as a motivational tool, channeling competitive energy into collective action.

However, English speakers and cultural outsiders should note that using 敌忾同仇 in the workplace requires careful consideration of power dynamics. Invoking the term implies there is a common enemy, which can be interpreted as either inspirational leadership or potentially divisive rhetoric depending on the organizational culture. Newcomers to a company should generally avoid being the first to introduce such charged language.

In international business settings involving Chinese companies, 敌忾同仇 may appear when Chinese negotiators frame discussions in terms of “us versus them.” Foreign businesspeople who recognize this rhetorical pattern can respond by acknowledging shared interests rather than accepting the adversarial framing, though doing so requires cultural sensitivity and diplomatic skill.

Social Media and Slang

The digital age has transformed how 敌忾同仇 appears in everyday Chinese discourse. On platforms like Weibo (微博, wēi bó), WeChat (微信, wēi xìn), and Bilibili (哔哩哔哩, bì lì bì lì), the term frequently emerges during moments of national controversy—territorial disputes in the South China Sea (南海, nán hǎi), tensions over Taiwan (台湾, tái wān), trade wars with the United States, or criticism of Japanese historical views.

Chinese netizens, particularly Gen-Z users, employ 敌忾同仇 both sincerely and ironically. Sincere usage follows traditional patterns—expressing genuine solidarity with national positions during international disputes. Ironic usage often involves young people mimicking patriotic rhetoric while adding subtle comedic elements, creating what scholars call “cynical nationalism” or “playful patriotism.” In these ironic contexts, 敌忾同仇 might appear in memes, response videos, or parody content that simultaneously expresses and satirizes collective anger.

The social media version of 敌忾同仇 also reflects China's digital ecosystem characteristics. The term often trends during coordinated official campaigns or during moments of nationalist fervor, where platforms amplify certain viewpoints. Understanding this dynamic helps observers interpret when usage represents genuine grassroots sentiment versus coordinated messaging.

The “Hidden Codes”

Beyond its surface meaning, 敌忾同仇 carries several unwritten social codes that native Chinese speakers intuitively understand but foreigners often miss.

First, the term implicitly assumes the rightness of one's own position. When someone uses 敌忾同仇, they are not merely describing shared hatred—they are declaring that the hatred is justified. This makes the expression inherently partisan and somewhat aggressive. Using 敌忾同仇 to describe a situation where one's own side might be seen as provocative or unreasonable would be considered inappropriate or ironic.

Second, 敌忾同仇 signals a call for unity that carries subtle pressure. When a leader invokes 敌忾同仇, they are implicitly asking non-supporters to join the collective stance. Those who refuse to share the hatred may be labeled as unpatriotic, disloyal, or insufficiently Chinese. This creates a social pressure mechanism that reinforces conformity during periods of national tension.

Third, the term often appears in contexts where direct confrontation is implied but not explicitly stated. Chinese diplomatic rhetoric frequently uses 敌忾同仇 to signal resolve without making explicit threats. The shared hatred creates a communicative space where strong actions become understandable, if not justifiable, to domestic audiences.

Finally, 敌忾同仇 has a theatrical quality that native speakers recognize. The expression is often used in highly performative contexts—official ceremonies, media broadcasts, political rallies—where its use contributes to a ritualized atmosphere of national solidarity. Recognizing this performative dimension helps observers understand when the expression represents genuine mass sentiment versus orchestrated displays.

Part 4: Practical Mastery (10+ Examples)

Example 1:

全国人民敌忾同仇,坚决反对任何外部势力干涉中国内政。

Pinyin: quán guó rén mín dí kài tóng chóu, jiān jué fǎn duì rèn hé wài bù shì lì gān shè zhōng guó nèi zhèng

English: The entire nation shares hatred for the enemy and resolutely opposes any external forces interfering in China's internal affairs.

Deep Analysis: This example represents the most common modern usage of 敌忾同仇—in official patriotic discourse and diplomatic contexts. The phrase “全国人民” (the entire nation) emphasizes the collective nature of the response, while “坚决反对” (resolutely oppose) adds determination. The mention of “外部势力” (external forces) establishes the enemy without naming specific countries, allowing for broad application. This sentence structure is typical of Chinese foreign ministry statements and state media editorials.

Example 2:

面对贸易摩擦,我们要敌忾同仇,维护国家经济安全。

Pinyin: miàn duì mào yì mó cā, wǒ men yào dí kài tóng chóu, wéi hù guó jiā jīng jì ān quán

English: Faced with trade friction, we must share hatred for the enemy and safeguard national economic security.

Deep Analysis: This example demonstrates how 敌忾同仇 is applied to economic contexts rather than military ones. The phrase “贸易摩擦” (trade friction) shows the term's flexibility in modern usage. The parallel structure “面对…我们要敌忾同仇…维护…” creates a sense of cause and effect—shared hatred leads to protective action. This usage reflects how economic competition has become a new arena for nationalist mobilization in twenty-first-century China.

Example 3:

在抗日战争时期,中华民族敌忾同仇,最终取得了胜利。

Pinyin: zài kàng rì zhàn zhēng shí qī, zhōng huá mín zú dí kài tóng chóu, zuì zhōng qǔ dé le shèng lì

English: During the Anti-Japanese War, the Chinese nation shared hatred for the enemy and ultimately achieved victory.

Deep Analysis: Historical framing is a common context for 敌忾同仇, particularly references to wartime periods. This example links contemporary usage to the patriotic tradition of resistance against foreign aggression. The use of “中华民族” (Chinese nation) rather than “中国人民” (Chinese people) gives the statement a more expansive, ethnic-cultural dimension. Such historical invocations serve to legitimize present-day expressions of nationalism by connecting them to narratives of national survival and triumph.

Example 4:

球迷们敌忾同仇,为国家队加油助威。

Pinyin: qiú mí men dí kài tóng chóu, wèi guó jiā duì jiā yóu zhù wēi

English: Fans share hatred for the opponent and cheer for the national team.

Deep Analysis: This example shows 敌忾同仇 applied to sporting contexts, where “enemy” refers to the opposing team rather than a national adversary. The term creates a sense of unity among fans rooting for the same side. While the intensity is lower in sports contexts, the fundamental structure remains—the identification of an opponent and the call for unified support against them. This usage demonstrates the term's flexibility beyond strictly political or military applications.

Example 5:

国际形势复杂,我们必须敌忾同仇,增强国防实力。

Pinyin: guó jì xíng shì fù zá, wǒ men bì xū dí kài tóng chóu, zēng qiáng guó fáng shí lì

English: The international situation is complex; we must share hatred for the enemy and strengthen national defense capabilities.

Deep Analysis: This example links external threat perception to domestic policy priorities—in this case, military spending and defense modernization. The phrase “国际形势复杂” (the international situation is complex) establishes a context of perceived external danger, which then justifies increased defense preparation. This logical structure is common in Chinese strategic discourse, where nationalist rhetoric serves to build public support for military and security policies.

Example 6:

虽然公司内部有分歧,但在面对竞争对手时,大家敌忾同仇

Pinyin: suī rán gōng sī nèi bù yǒu fēn qí, dàn zài miàn duì jìng zhēng duì shǒu shí, dà jiā dí kài tóng chóu

English: Although there are internal divisions within the company, when facing competitors, everyone shares hatred for the enemy.

Deep Analysis: This corporate application demonstrates how the conceptual framework of 敌忾同仇 translates to organizational behavior. The example explicitly acknowledges internal disagreements (“虽然公司内部有分歧”) before showing how a common external enemy creates temporary unity. This mirrors real-world social dynamics where intergroup competition can temporarily override intragroup tensions—a phenomenon social psychologists call “superordinate goals.”

Example 7:

面对网络谣言,网友们敌忾同仇,坚决抵制虚假信息。

Pinyin: miàn duì wǎng luò yáo yán, wǎng yǒu men dí kài tóng chóu, jiān jué dǐ zhì xū jiǎ xìn xī

English: Faced with online rumors, netizens share hatred for the enemy and resolutely resist false information.

Deep Analysis: This example applies 敌忾同仇 to information warfare contexts, where “enemy” refers to purveyors of misinformation rather than military adversaries. The term “网络谣言” (online rumors) often implies foreign influence operations or malicious domestic actors in Chinese official discourse. This usage reflects the growing importance of information security in contemporary Chinese nationalism and the framing of cognitive warfare as a form of national threat.

Example 8:

各国应该敌忾同仇,共同应对全球气候变化挑战。

Pinyin: gè guó yīng gāi dí kài tóng chóu, gòng tóng yìng duì quán qiú qì hòu biàn huà tiǎo zhàn

English: All countries should share hatred for the enemy and jointly address the challenge of global climate change.

Deep Analysis: This example uses 敌忾同仇 in an unusual context—the environment. Here, “enemy” refers metaphorically to climate change itself, transforming an abstract threat into a personified adversary. While grammatically correct, this usage is somewhat creative and would not appear in formal documents, demonstrating the term's flexibility in rhetorical and persuasive contexts. The example also shows how the framework can be applied to cooperative challenges by identifying a common non-human threat.

Example 9:

老师告诉学生们,要敌忾同仇,坚决抵制校园欺凌。

Pinyin: lǎo shī gào sù xué shēng men, yào dí kài tóng chóu, jiān jué dǐ zhì xiào yuán qī líng

English: The teacher told the students to share hatred for the enemy and resolutely resist school bullying.

Deep Analysis: This educational application shows 敌忾同仇 used in moral instruction contexts. “校园欺凌” (school bullying) is framed as an enemy to be collectively opposed, teaching children the value of unified resistance against wrongdoing. This usage demonstrates how the conceptual framework underlying 敌忾同仇—identifying threats and building solidarity against them—begins early in Chinese education and socialization.

Example 10:

海外华人敌忾同仇,为祖国统一大业贡献力量。

Pinyin: hǎi wài huá rén dí kài tóng chóu, wèi zǔ guó tǒng yī dà yè gòng xiàn lì liàng

English: Overseas Chinese share hatred for the enemy and contribute strength to the great cause of national reunification.

Deep Analysis: This example invokes 敌忾同仇 in the context of diaspora nationalism and cross-strait relations. “祖国统一大业” (the great cause of national reunification) refers primarily to Taiwan's political status, one of the most sensitive topics in Chinese nationalism. The phrase positions overseas Chinese as participants in national projects despite their geographic distance, maintaining emotional and political ties to the homeland. Such framing is common in overseas Chinese media and community organizations.

Example 11:

面对自然灾害,全国上下敌忾同仇,全力支援灾区。

Pinyin: miàn duì zì rán zāi hài, quán guó shàng xià dí kài tóng chóu, quán lì zhī yuán zāi qū

English: Faced with natural disasters, the entire nation shares hatred for the enemy and fully supports disaster areas.

Deep Analysis: This example applies 敌忾同仇 to disaster response, personifying the natural disaster as an enemy requiring unified resistance. While “自然灾害” (natural disasters) are not conscious adversaries, framing them as enemies serves to mobilize collective action and emotional investment in relief efforts. This usage demonstrates the term's metaphorical flexibility—the enemy can be concrete, abstract, or even natural phenomena.

Example 12:

科学家们敌忾同仇,努力突破技术封锁。

Pinyin: kē xué jiā men dí kài tóng chóu, nǔ lì tū pò jì shù fēng suǒ

English: Scientists share hatred for the enemy and strive to break through technological blockades.

Deep Analysis: This final example shows 敌忾同仇 in the context of technological competition and national innovation campaigns. “技术封锁” (technological blockade) refers to restrictions on technology transfer or access to advanced components, often attributed to foreign sanctions or export controls. The term frames scientific research as a patriotic mission and positions international technology competition as a form of warfare requiring unified national effort.

Part 5: Nuances and Common "Laowai" Mistakes

Understanding what not to do is often as important as knowing correct usage. The following section identifies frequent errors made by English speakers and non-native Chinese learners when attempting to employ 敌忾同仇.

Mistake 1: Using It in Neutral or Positive Contexts

Wrong: 今天天气真好,我们敌忾同仇去野餐吧。

Right: 今天天气真好,我们一起去野餐吧。

Explanation: 敌忾同仇 carries intense emotional and political connotations related to hatred toward enemies. Using it in casual, positive contexts like planning a picnic is grammatically possible but semantically absurd. Native speakers would find such usage either confusing or humorous, as if the speaker were making an inappropriate joke. The term should only be used when genuine collective opposition or shared negative sentiment toward an adversary is being expressed.

Mistake 2: Confusing It with Simple Agreement

Wrong: 我和朋友们敌忾同仇,都觉得这部电影很好看。

Right: 我和朋友们意见一致,都觉得这部电影很好看。

Explanation: Some learners mistakenly interpret 同仇 as meaning “same opinion” or “agreeing with each other.” However, the 敌 (enemy) component is essential to the term's meaning. 敌忾同仇 specifically involves shared hatred toward an external enemy, not mere agreement among friends. For expressing simple agreement or shared positive opinions, other expressions like 意见一致 (yì jiàn yī zhì, unanimous opinion) or 不谋而合 (bù móu ér hé, coincidentally agree) should be used instead.

Mistake 3: Applying It to Minor Disagreements

Wrong: 我们部门敌忾同仇,反对把咖啡机换到三楼。

Right: 我们部门团结一致,反对把咖啡机换到三楼。

Explanation: Using 敌忾同仇 for minor workplace disputes about facilities creates an inappropriately dramatic tone. While the term can technically be applied to any situation involving shared opposition, its strong patriotic and martial connotations make it absurd for trivial matters like coffee machine placement. This mistake often stems from misunderstanding the intensity level the term conveys. Reserve 敌忾同仇 for situations involving significant threats, competition, or controversy.

Mistake 4: Inverting the Word Order Incorrectly

Wrong: 我们应该同仇敌忾地面对挑战,但这个词组应该是敌忾同仇

Right: 面对这些挑战,我们应该敌忾同仇

Explanation: While 同仇敌忾 is a valid variant of the expression, it is not simply an inverted version of 敌忾同仇. Both are independent, grammatically correct four-character idioms. Learners sometimes attempt to use them interchangeably based on word order without recognizing that each has its own established usage patterns. In modern Chinese, 同仇敌忾 appears slightly more frequently in formal writing, while 敌忾同仇 is equally common in spoken and written contexts.

Mistake 5: Forgetting the Enemy Component

Wrong: 大家敌忾同仇,努力工作完成项目。

Right: 大家齐心协力,努力工作完成项目。

Explanation: When there is no identifiable enemy or adversary in the situation, using 敌忾同仇 creates confusion about what exactly the shared hatred is directed toward. The term inherently requires an enemy to be identified—whether that enemy is a foreign nation, a competitor company, a natural disaster, or even an abstract threat like climate change. For situations involving only cooperative work without opposition, expressions like 齐心协力 (qí xīn xié lì, working with one heart) or 同心协力 (tóng xīn xié lì, making joint efforts) are more appropriate.

Mistake 6: Using It in Diplomatic or International Business Settings

Wrong: 我们公司敌忾同仇,绝对不会向竞争对手妥协。

Right: 我们公司将坚持原则,维护自身合法权益。

Explanation: In international business contexts, using 敌忾同仇 can create unnecessarily aggressive impressions and potentially damage business relationships. While competitive language is acceptable in business, the strong adversarial framing of 敌忾同仇 suggests zero-sum conflict rather than competitive cooperation. Diplomatic and business communication typically benefits from more measured language that acknowledges mutual interests alongside competitive elements.

同仇敌忾 (tóng chóu dí kài) - The reversed variant of 敌忾同仇 with identical meaning; slightly more common in modern written Chinese and official documents.

万众一心 (wàn zhòng yī xīn) - “Millions of people, one heart”; emphasizes collective unity and shared purpose without the element of hatred or enemy identification; often used in disaster relief and national campaigns.

众志成城 (zhòng zhì chéng chéng) - “Unity of will forms a fortress”; focuses on collective determination achieving seemingly impossible goals; typically used in contexts of construction, development, and overcoming challenges.

义愤填膺 (yì fèn tián yīng) - “Righteous indignation fills the chest”; describes individual moral outrage at injustice; related to the emotional intensity of 敌忾同仇 but without the collective or adversarial elements.

同舟共济 (tóng zhōu gòng jì) - “Crossing the same river in the same boat”; emphasizes mutual assistance and cooperation during shared adversity; related through the concept of unified response to challenges.

众叛亲离 (zhòng pàn qīn lí) - “Abandoned by one's followers and associates”; the opposite concept, describing the consequences of losing popular support; contrastive to the unity implied by 敌忾同仇.

草木皆兵 (cǎo mù jiē bīng) - “Every bush and tree appears to be a soldier”; describes extreme paranoia and seeing enemies everywhere; related to the enemy-perception aspect of 敌忾同仇 but with negative connotations of excessive fear.

风声鹤唳 (fēng shēng hè lì) - “The wind whistles and cranes cry”; similarly describes exaggerated threat perception; related to 敌忾同仇 through the theme of perceived external danger.