1. This is a sail for evocation, and it is a funerary object for the deceased to enter the kingdom of heaven smoothly. From the design, we can also find that there are messengers from the underworld to guide the dead.

2. The design is bright, the brushwork is meticulous, the face of the deceased is fine and realistic, and the expression of Chinese painting with lines as the main form has gradually matured at that time.

3. The religious beliefs at that time can also be seen from the patterns.

This custom existed at that time.