Who is Char Nyuk Tsin from Hawaii and what is their importance?

Char Nyuk Tsin is the daughter of the Char who ruled the High Village in 1847. Her father leaves to fight in the Taiping Rebellion and she only sees him once again, when she is eight. She is kidnapped and sold to a brothel that sends her to the Pacific with Mun Ki, who is to deliver her to another brothel. He decides to keep her and she bears his son. The Chinese name-giver changes her name to Wu Chow's Auntie. She bears five children with Mun Ki and learns that, when they return to China, she will be sent to live in the Hakka village apart from her sons, who will live with Mun Ki's first wife.