Why did Bi Songping call March's father?

It's Bi Songping's stepfather. By inquiring about Bi Songping's personal information, I learned that after Bi Baocai, Bi Songping's biological father, divorced his wife, she married March, and Bi Songping followed her mother, and March became Bi Songping's stepfather. Bi Songping, 1957, from Weishi County, Henan Province. 1973 was admitted to weishi county drama school, and 1978 developed in weishi county troupe. Looking for a husband in Luoyang dialect is a famous work by Bi Songping, a famous opera writer.