This is a Chinese traditional folk dance called Yanko Dance.
It originated from the Han Dynasty and has a history of over 2000 years.
The dance is performed by women wearing white clothing, which symbolizes purity and innocence.
The costumes are made of silk and have intricate embroidery designs on them.
The dance is accompanied by traditional Chinese instruments such as the erhu and pipa.
It is a beautiful and elegant performance that showcases the rich cultural heritage of China.