This is TaiChi pushing hands it looks a lot like sumo wrestling except the people are much lighter and they are wearing clothes and they do throws

Unfortunately most TaiChi classes are just a dance routine and do not have actual pushing hands sparring

It is very difficult to find TaiChi for self defense as dance routines designed as exercises for weaker & older people & people with painful joints are usually taught instead

https://www.youtube.com/watch?reload=9&v=HUJ_VKiz6No

TaiChi 太極推手比賽

WangChangAn

Youtube