This is as much as I know and I'm not good with names. The older man with scar on his eye his Sha Rongs biological dad-father and son look alike(don't know about his mother). The White snake guy(missing arm) and his sister were adopted (from the circus) into Sha Rongs mob family by Bo Raek(fancy lady with 1920's hairstyle-dead killed-setup). She was married to one of the mob members Mao ( you see him Black
hair, traditional Asian clothes, works with the old man, head boss also sleeps w/Sha Rongs father). Mao and Bo Raek have a daughter Mei. The little crazy girl l think she she is the daughter of Sha Rong's father(father ShaRong) and I think Bo Raek(but I'm sure she's the mother).
***I hope this helped a little bit. I think I'm accurate ... this was therapeutic for me because I love these characters.
Can someone explain to me their family tree? I'm really lost :<< who's who and who and the aunt and son and daughter of whoooo???