Why did Zhang Haoran and Xiao Ju cooperate?

Because it is a mentoring relationship. According to Sohu News, he cooperated with Shang because he was the master of Deyun Society and Shang was the apprentice of Zhang Haoran of Deyun Society. Zhang Haoran is an actor, so he cooperates. Shang, whose real name is Shang Zhennan, was born in Henan on August 29th, 1995. She is a young crosstalk performer of Deyun Society. Zhang Haoran,10.5 was born in Jilin, 1993, an actor in China, graduated from Jilin Art Institute.