To shed crocodile tears; to show false sympathy or feigned pity, implying hypocrisy.
他表面上说关心小明的学习，但实际上却是在幸灾乐祸，真是猫哭老鼠
He pretended to care about Xiao Ming's studies, but in reality, he was gloating; it was truly the cat crying over the mouse.
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