During the Spring Festival, the red word "Fu" is often seen upside down on the doors and windows of many family courtyards, which can be regarded as the traditional custom of China people. According to "Dream of Liang Lu", "Scholars of all ages sweep the floor, remove dust and dirt, clean their homes, change door gods, hang Zhong Kui, nail peaches, stick spring cards and worship their ancestors." The "spring card" in this article is the word "fu" written on red paper.

There is also a legend that the word "Fu" is inverted in China. Zhu Yuanzhang, the Ming emperor, took the word "fu" as a secret memory and prepared to kill people.

In order to eliminate this disaster, kind Ma Huanghou asked the whole city to put a "blessing" on the door before dawn.

Naturally, no one dares to go against Ma Huanghou's will, so the word "Fu" is posted on every door. If one of the families can't read, turn the word "fu" upside down. The next day, the emperor sent people to the streets to check and found that every family had posted the word "Fu", and another family had posted the word "Fu" upside down. When the emperor heard the news, he was furious and immediately ordered the body guard to cut down the house. When Ma Huanghou saw that things were not good, he said to Zhu Yuanzhang, "The family knew that you were visiting today, and deliberately turned the word' Fu' upside down. Isn't this the meaning of "blessed road"? " When the emperor heard the truth, he ordered his release, and a great disaster was finally eliminated. Since then, people have turned the word "Fu" upside down for good luck and in memory of Ma Huanghou. This is the origin of profiteering.