What is the name of the background ribbon of Buddhist murals?

In Buddhist murals, a special decoration is usually painted on the background, which is called "ribbon" or "Yun Rui".

Ribbon is a curved decorative pattern, which usually appears behind the image of Buddha, Bodhisattva or other sages. It symbolizes auspiciousness and auspiciousness, and is often expressed by colorful colors and meticulous painting techniques. The starting point of the ribbon is usually connected with the head of the Buddha statue and extends above the background, sometimes even throughout the whole picture.

Ribbon plays a role in decorating the picture and enhancing the sacred atmosphere in Buddhist art, and also represents the brightness and solemnity of Buddha or Bodhisattva. It is one of the important image elements in Buddhist murals.