khí-phùi-bīn起屁面

to suddenly turn hostile

to suddenly turn hostile; to fall out with

English Wiktionary, “起屁面” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E8%B5%B7%E5%B1%81%E9%9D%A2 · confidence: Medium (Wiktionary)