Bake betting comes from the national hero Zheng Chenggong.

It is said that more than 300 years ago, Zheng Chenggong stationed troops in Xiamen. Every August 15th, when the moon is full, the soldiers who were full of heroic spirit to fight against the Qing Dynasty and restore the Ming Dynasty would inevitably feel homesick for their relatives. In order to relieve and relieve the soldiers' pain of missing their hometown and relatives during the holidays, Zheng Chenggong's subordinate Hong Xu invented a pie-betting game that allowed soldiers to watch the moon and bet on cakes. Zheng Chenggong personally approved that from the 13th to the 18th of the lunar calendar, for six nights, the army would take turns admiring the moon and betting on cakes on odd and even days. This unique game was gradually spread and improved among the people and became an interesting folk activity. This activity was selected into the second batch of national intangible cultural heritage list in 2008.

Expo cake rules: There are 63 pieces of cake for each Mid-Autumn Festival party. Each cake has 1 "No. 1 Scholar", 2 "Double Halls", 4 "Three Reds", 8 "Four Advances", 16 "Two Moves", and 32 "First Show" cakes. The size of the cake in the plenary session is 63 pieces, which contains the number seventy-nine and sixty-three, which is an auspicious number. Because ninety-nine and eighty-one is the number used by emperors, eighty-nine and seventy-two is the number of thousand years, and Zheng Chenggong was granted the title of King Yanping, so he can only use the number sixty-three. These sixty-three pieces of cake represent the number one scholar, number two, top prize, Jinshi, Juren, and scholar respectively. Take 6 popular folk gambling dices, put them in a large porcelain bowl, and throw them in order for the participants to play.