According to legend, during the Spring and Autumn Period and the Warring States Period, Wu Zixu, a courtier of the State of Chu, went to Wu to avenge his father and wanted to use Wu's soldiers to crusade against Chu. He came to the State of Wu, helped He Lv, the king of Wu, to become a minister active in the State of Wu. Gou Jian, the state of Yue, took the opportunity to send troops to attack the state of Wu and surrounded the capital of Wu. At that time, it was the end of the year, it was freezing, the people in the city were hungry and cold, and the country and people were really in danger.

At this critical moment, people think of Wu Zixu's entrustment before his death, and secretly tear down the city walls to dig the ground. People are surprised to find that the foundations of cities are all bricks and stones pressed with cooked glutinous rice. It turns out that this is the grain reserve stored as the cornerstone of the city wall after a large amount of glutinous rice is steamed and pressed into bricks in Wu Zixu.

People can't help but sigh, Wu Zixu is so prescient! Everyone picked up the glutinous rice bricks, smashed them, cooked them again and ate them separately. Later, in Chutian area, people would make glutinous rice into Ciba every year as a "city brick" to show their respect for Wu Zixu.

Extended data:

Ciba is a kind of food made by steaming and mashing glutinous rice. Ciba is made by putting the cooked glutinous rice into a stone trough and mashing it with a stone hammer or bamboo (due to local differences, some of it is replaced by bamboo). Generally speaking, this kind of food can be called Ciba. Ciba, a snack of all ethnic groups in the south, is popular in the south of China.

Ciba is a snack of southern nationalities, which is very popular in southern China. Guizhou, Chongqing, Sichuan, Jiangxi, Hunan, Fujian, Hubei, Guangdong, Guangxi, Shaanxi and other provinces and cities, Jiangxi Huangchuan, Jiujiang and Fujian Wuyishan are the most popular areas, and Guangxi Wuzhou is the most special one.

People in most areas are used to playing Ciba in the twelfth lunar month. Every traditional festival or family celebration in Meizhou Hakka area; Sichuanese make moon cakes before Mid-Autumn Festival, which symbolizes harvest, celebration and reunion. They are necessary for Mid-Autumn Festival and moon cakes.

In some places in Sichuan, sweet-scented osmanthus is added to Ciba to make laurel Ciba, dipped in fried soybeans and sugar. The taste is quiet and elegant, sweet and refreshing, and has a unique flavor.

Reference: Baidu Encyclopedia -Ciba