1. According to the query on Douban Movie Network, in the TV series Langyan Sisters, Liu Shuang'er successfully gave birth to a daughter. Song Yan named the child Liu Lianshuang, which shows his good intentions. Langyan Sisters is a TV series with the theme of Anti-Japanese War, produced by Directed by Sun Xiaoguang, starring Lian Yiming, Yang Ruoxi, Wang Ke and others.