In fact, there are several folk sayings and functions of hanging red cloth on the door frame:
1. The owner is happy to have a son and the woman is in confinement, so red cloth is hung on the door. It means celebration; the second is to tell visitors to keep quiet.
2. If there are streets or roads in front of the door, there may be unrest or disaster. The ancients often hung red cloth or garden mirrors to solve the problem.
3. The house owner hangs red cloth to drive away the odor of visitors and ensure peace and quiet.