Legends say that a Chinese princess secretly took the silk-making technology out of the country to her husband, the king of ancient Khotan.

The story is elaborated in a woodcut painting that is around 1,400 years old. It's known as the Legend of the Silk Princess and it is now in the British Museum after being found in a Buddhist shrine in modern-day Hotan, Xinjiang Uygur autonomous region.

The story has been adapted into a dance drama Silk Princess by the Xi'an Song and Dance Ensemble, which premiered in Xi'an, the capital of Shaanxi province, in March.