不打自招yīngwénjièshì:

n.  condemned oneself out of one's own mouth; make a confession of one's own accord n.  condemned oneself out of one's own mouth n.  make a confession of one's own accord n.  Confess without being pressed

(fēizhùcèchéngyuánměiyèzànxiàn 4 lì)

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