下班脑

Literally a 'straw-stage troupe' — any operation that looks official but is actually disorganized, unprofessional, and improvised; the viral extended form 'the whole world is one giant clown show' applies that to everything.

Involution — excessive, often pointless competition where everyone works harder but nobody gains more.

Working people / wage slaves — a self-deprecating term workers use to describe themselves.

Working 9am to 9pm, 6 days a week — describes the grueling work culture in Chinese tech companies.