Are Du Cheng and Xiao Jia real people in the story of Beijing Family Generation?

Yes Beijing Jiadai, formerly known as Ren Jiazhong, was born in 1963, but he is a native of Beijing. At that time, there was a saying in Beijing called Jiadai Shuai, which shows that Jiadai is also a handsome and charming little fresh meat. Jia Dai has a generous personality and soon made many like-minded friends in this city. Because these friends are from other places and are often bullied by a group of local forces, everyone dares to be angry and dare not speak, because he understands that only people with malicious intentions can gain a foothold.