打肚皮官司 To fight a lawsuit in the belly. To keep one’s words shut inside and not say them.
情面 Feeling and face. The goodwill and face between people. To expose mistakes “without regard to qingmian” is to ignore them.
磨不开 Unable to grind it open. To feel too embarrassed to do or say something.
当面锣，对面鼓 A gong to the face, a drum opposite. To settle a disputed matter face to face.