Bié qīngyì xiāngxìn lǎobǎn de chéngnuò, xiǎoxīn zǒugǒupēng.
Don't take the boss's promises at face value — watch out for being discarded once you're no longer needed.
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From 《史记·越王勾践世家》: 狡兔死，走狗烹；飞鸟尽，良弓藏 — when the crafty rabbits are dead, the hunting dogs are cooked; when the flying birds are gone, the good bow is stored away. Fan Li's warning to Wen Zhong after Goujian's victory.
