Comparison to Western Concepts: In American culture, there's a strong emphasis on “being yourself.” While people still act or pretend, the accusation of “being fake” is a character judgment. In China, the concept is tied more closely to social dynamics and the concept of `
面子 (miànzi)`, or “face.” Someone might 装 to gain face, save face, or appear more impressive than they are. Calling them out with a simple “别装了 (bié zhuāng le!)” – “Stop pretending!” – is a direct challenge to their social performance.