Yuan Shi Tian Zun is a Taoist immortal, and it is said that he is one of the founding gods of Taoism. The specific length of time the Buddha wore it was not clearly recorded and stipulated. The length of wearing time may vary according to personal beliefs, rituals, traditional customs or personal preferences.

In Taoist beliefs, gods are usually worn to show respect and worship for the gods, and also have the meaning of blessing and blessing. The length of wearing time can be determined according to personal wishes and needs. Some people may wear it every day, while others may choose to wear it on specific occasions or ceremonies.

In short, there is no fixed rule on the wearing time of the Buddha in the early Yuan Dynasty, and it can be decided according to personal beliefs and customs.