Clothing: All you need are comfortable clothes: loose trousers and a T-shirt for example.
Shoes: You don’t need special Chinese shoes, but comfortable ones. Trainers are ok, and so are socks and bare feet.
Yoga mat: No needed. You won’t need anything extra like this. There are practically no exercises done on the floor.
Any other extras needed will be provided by House of Movement.
If you have a silk tai chi uniform and want to bring it over, you are more than welcome.