Jiābān wénhuà shì hěn duō hùliánwǎng dàchǎng de qǐyè wénhuà.
Overtime culture is part of many big tech companies' corporate cultures.
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Often a target of satire in Chinese office life: 狼性文化 (wolf-spirit culture), 狼性加班 (wolf-spirit overtime), 奋斗文化 (hustle culture), 感恩文化 (gratitude culture — where employees must thank the company for overtime). See also: 996, 内卷.