Why is Mrs. Jong willing to adopt new American rules so that waverly can become a chess champion?

In the movie joy luck club (1993), Mrs. Lindo Jong will finally begin to carry out new american rules because, even taught to her daughter an ancient technique that allows her to have more clarity and in the mahjong game, she realized they are in the United States and simply does not want her daughter Waverly is a "tourist" and finally acquire american customs.

Mrs. Jong is willing to adopt new american rules so that Waverly can become a chess champion because she remembers how difficult it was for her to make a living in America when she arrived. She thinks that US society is competitive and hard to survive, she had to learn everything by herself and is willing to adopt this rules because she believes in her daughter's talent to play chess. She wants a different experience for her that the one she had.