The term 西化 is not just a translation; it's a reflection of China's modern history. Since the mid-19th century Opium Wars, China has been grappling with how to engage with the technologically and militarily dominant West. The debate has never been simple. Early reformers in the late Qing dynasty adopted the slogan “中学为体，西学为用” (zhōngxué wéi tǐ, xīxué wéi yòng), meaning “Chinese learning as the core essence, Western learning for practical application.” This philosophy attempted to adopt Western technology (guns, ships, science) without sacrificing core Confucian values. This highlights the central conflict embedded in the term 西化: a desire for the fruits of Western progress without losing one's “Chineseness.” In the West, “Westernization” is often viewed as a neutral historical process, sometimes synonymous with modernization or globalization. In China, however, 西化 is a deeply charged term. It carries the weight of historical humiliation and the ongoing struggle for national rejuvenation. It forces a question of identity: How much can China change before it is no longer “China”? This leads to the crucial distinction between 西化 (Westernization) and 现代化 (xiàndàihuà - Modernization), a concept China's leaders strongly prefer. They argue that China is pursuing modernization on its own terms, not simply copying the West.
The connotation of 西化 heavily depends on the context and the speaker's perspective.