sentences:  Popular theatre forms such as Hát tuồng, Hát chèo, and Cải lương all often feature dance, however these dances are performed in a liberal manner without set rules, unlike other more specific dance styles.The lion dance was imported from China into Vietnamese culture where it developed its own distinct style.It is performed primarily at traditional festivals such as Tết (Lunar new year) and Tết trung thu (Mid-Autumn Festival), but also during other occasions such as the opening of a new business.