professor chen and his robot assistant qiqi tell everyone the story behind the idioms in the cultural palace. professor chen told everyone the story of "returning the jade to zhao" on the spot. professor chen also took out the props of heshi bi. qiqi on the side cooperated with professor chen to perform the storyline. this season, 40 idiom stories were told, such as: "shijiao in timely help" and "take a gate", which attracted the attention of every little audience. everyone got a lot of life inspiration from professor chen's explanation. ccc