How did Huang Li of Dazhaimen know his life experience?

Found big space space. According to the plot of "Da Zhai Men", Huang Li is skilled in martial arts. In order to protect his sister, he followed Hehe all the way to Jinan, found Dagege, and learned about the feud between Baijia and Zhan. Naturally, he knows that Huang Chun is his sister, and he also knows his own life. Guo Baochang is a screenwriter and director of "Big House Gate", and won the 5438+0 CCTV viewing champion in 2006.