Tā yī lái, zhěng gè bàngōngshì dōu biàn de wūyānzhàngqì.
Once he arrived, the whole office descended into chaos.
Tips
memory
乌烟 (black smoke) + 瘴气 (miasma / toxic air from swamps) — an atmosphere of dark smoke and poisonous swamp gas. Use this idiom to describe any corrupt, chaotic, or toxic environment.
