rints left behind.The surface of this lock is so clean. This indicates two possibilities.After Mr. and Mrs. Jiang left, locking the door behind them, someone came over.One is, the person who locked th...lly, Song Chengzhi still couldn't believe it. He took a step forward and finally walked towards ward 919.The ward door was pushed open, the lights came on, and Song Chengzhi saw with his own eyes that...