lt;pgt;People in the

Emperor Taizong Li Shimin ordered the Imperial Censorate Wei Zheng to be in charge, with assistance from the Ministry of Justice, to thoroughly investigate this case.,If your forehead hits a wall, why does the back of your head hurt,He couldn't see the back of his head, so he came to the railing and turned around to say to the jailer, "Could you please take a look at the back of my head"。