Shangguan Yunzhu 上官云珠
Jiang Tianliu 蒋天流
Han Fei 韩非
Shi Hui 石挥
It's about two families in Shanghai after 1945, but before 1949, presided by father in one, and mother in the other, cross-joined by one married couple, while their siblings plan to marry too.
Also available on Youtube with English sub-titles (see link below)