Cheng'er was originally a palace servant, but later his family committed a crime and he was enslaved and sent to the Cui family.,After calming down, Cheng'er started thinking about how to,The other two men hastily agreed, and after a while, one went to get food and the other went to the toilet. Cheng got the chance and climbed out of the window in the firewood shed, then quietly scaled the wall and escaped.。