To feign sympathy or show hypocritical compassion; to pretend to feel sorry for someone while actually having malicious intent or ulterior motives.
他表面上对邻居的遭遇深表同情，但私下里却幸灾乐祸，真是猫儿哭鼠
He outwardly expressed deep sympathy for his neighbor's misfortune, but secretly gloated; he was truly shedding crocodile tears.
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