Bobbing (Postscript Cake) is a unique Mid-Autumn Festival traditional activity of Minnan people for hundreds of years, a unique moon cake culture and a historical inheritance of Minnan people. According to legend, the Mid-Autumn Festival pancakes were invented by the Ministry of Life to relieve the soldiers' love for the Mid-Autumn Festival and boost their morale. Therefore, it has been passed down from generation to generation and has become a unique folk custom in southern Fujian today.

The Mid-Autumn Festival started in Siming, Quanzhou (now Xiamen Island). It is said that it was invented by Zheng Chenggong's Xu Hong, which is a unique Han folk activity in southern Fujian and an extension of cake culture. Bo cake is a popular entertainment activity during the Mid-Autumn Festival, and the prizes of participants are determined by the combination of six dice throwing results. Traditional prizes are moon cakes of different sizes. After a while, 1 won the prize, 2 opponents, 4 winners, 8 winners, 16 winners and 32 winners. According to legend, this game can predict people's luck in the coming year.

In southern Fujian, gambling on cakes during the Mid-Autumn Festival has also become a commercial activity and a popular game [1]. The "Scenery of Fujian" published by Fujian People's Publishing House 1985 records that in Quanzhou, there is a custom of "grabbing cakes" in the Mid-Autumn Festival. In some cities and rural areas in central and eastern Taiwan Province Province and kinmen county, an outlying island in Taiwan Province Province, the custom of eating Zhuang Yuan cakes in Mid-Autumn Festival is still popular. In Jinmen, Jincheng Wucuo Community Development Association holds the Mid-Autumn Festival Community Gala every year, as well as the Bo Zhuang Yuan Cake Competition.