Xu Xialing,
Xialing is a 40 year old who is known for her weapon called the Rope Dart, she was born in the early 2000s, she is now a mastered fighter.
Backstory The youngest child whom we see as a female, enjoying her life like there wasn't any problems. One day she saw men frustrated because her father did physical damage to their belongings. Atleast she and her brother wasn't included in this but her mother had to fight them in order to sort it out, turns out she died. Her brother and father went out in order for them to seek revenge, her father wanted Shang-Chi to be trained in order to kill the man who was responsible for the mother's death, she can't train with the boys, because 'Wenwu' reminded her of her mother, though she was allowed to see their every move, she trained everyday and did 'better' than them. A following day, Shang-Chi left because he was now ready to kill the man, she cried silently and got over it slowly. She realized that she didn't need him anymore. When she was 16, she ran away and built a secret fighting arena connected to the dark web, and it slowly built up every month and now it was popular.
Present Day She is now the Leader of the Ten Rings Organization, starting to train any gender.