Our country does not pay attention to the preservation of traditional dance.

I suggest you find some information about China's traditional dramas. China ancient dance was gradually absorbed in the Song Dynasty and lost its independent performance form.

China has had this kind of cultural exchange with foreign countries since the Han Dynasty, and many dances have been preserved since they were introduced to foreign countries, such as "Beauty Cut Peony" and "Spring Warbler" preserved in South Korea, as well as music and dance in sacrificial ceremonies for Confucius. Japanese samurai Lan Ling, etc.