guī​xiào​biē​wú​wěi

the pot calling the kettle black

龟笑鳖无尾 龜笑鱉無尾 guī​xiào​biē​wú​wěi
the pot calling the kettle black
Literally "a tortoise laughing at a soft-shelled turtle for having no tail", used to describe someone who mocks others for faults that they also possess.

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