Which nationality is the fighting force of dance props?

you should be asking "which nationality is the dance prop with a hat?" , Dai people.

Dai Li Dance belongs to dai dance and is popular in Jinping County. It's hot and rainy there, and you can't live without a hat in your daily life and work. Hence the hat dance. The movements of the hat are "carrying the hat", "rolling the hat in front of the body", "rolling the shoulder hat" and "swinging the hat", etc. When dancing, the knees are gentle and slightly curved, but it is not obvious.

Dai (Roman alphabet: Dai), also known as Thai (Thai: Roman alphabet: Thai), Shan (Roman alphabet: Shan), etc. The national language is Dai (Thai), which belongs to the Zhuang-Dai branch of the Zhuang-Dong language family of Sino-Tibetan languages.