倾国倾城倾泥煤
[qīng guó qīng chéng qīng ní méi]
These are three phrases juxtaposed humorously. '倾国倾城' (beautiful enough to make nations fall) usually describes extreme beauty. '倾泥煤' is added whimsically, meaning 'to ruin it', turning a classic compliment into a self-deprecatory jest.