Tā hújiǎ-hǔwēi, kào zhe lǎobǎn de míngshēng qīfu tóngshì.
He bullies his colleagues by leveraging the boss's name like a fox borrowing a tiger's might.
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From 《战国策·楚策一》: a fox tricks a tiger into walking behind it, making other animals flee in terror. The tiger believes the animals fear the fox, not realizing they fear him.