There are quite a few chess and card rooms in Hangzhou. There are usually Weiqi, China Elephant and National Elephant. Teacher Yao from Tianzong Children's Chess Institute has heard of it? I have a lot of experience in the enlightenment of children's Go. I think it's quite appropriate to go in your child's situation. Go there first for Weiqi enlightenment, understand Weiqi culture and basic rules, and get in touch with famous boards. It is good for children to improve the level of Go. You can take the children to have a look, I hope it will help you!