While not as deeply philosophical as concepts like
道 (dào), `空洞` taps into a key cultural value: pragmatism and the importance of substance. In Chinese culture, there's a general appreciation for things that are tangible, effective, and sincere. Labeling something—be it a political slogan, a business plan, or a person's words—as `空洞` is a serious criticism. It implies that it's useless, insincere, and a waste of time.