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 borrow soldiers from Wu to crusade against Chu. He came to the State of Wu, helped He Lv, the king of Wu, to become an active minister of the State of Wu. Soon, he realized his ambition, led Wu Bing to attack Kyoto, the capital of Chu, dug the tomb of the king of Chu, and whipped the body for revenge. Since then, Wu Zixu has been granted land. On one occasion, the King of Wu ordered him to lead people to build the famous "He Lv City" to prevent invasion. After the completion of the city, the prince of Wu was overjoyed. Only Wu Zixu is unhappy. He knows that he has a lot of grievances, and he is afraid that someone will find it difficult to tolerate him in the future. After returning to the camp, he said to his cronies, "Forgetting Wang Xi will not come to a good end. After my death, if the country is in trouble and the people are hungry, you can dig three feet under Xiangmen (one of the eight gates of Suzhou) to satisfy your hunger. " After He Lv's son Fu Cha succeeded to the throne, he repeatedly rejected Wu Zixu's suggestion, but actually listened to rumors, which led to Wu Zixu's suicide. As Wu Zixu expected, shortly after his death, Gou Jian of Yue took the opportunity to send troops to attack Wu and surrounded the capital of Wu. It was the end of the year, the weather was cold, people in the city were starving, and the country and people were really in danger. At this critical moment, people remembered Wu Zixu's instructions before his death, and secretly pulled down the city walls to dig the ground. People are surprised to find that the foundations of cities are all bricks and stones pressed by 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 then ate them separately. Later, in Chutian area, people will make glutinous rice into Ciba at the end of the harvest year, just like the "city brick" of that year, to show their respect for Wu Zixu. Up to now, Ciba is still a must-have food for people who travel from south to north before the Spring Festival every year. In some places, Ciba is made into large and small circles, symbolizing harvest, celebration and reunion. Some places are also called rice cakes, and this name also means good luck. People often say: "rice cake, rice cake, long life." The rice cakes in Daoxiang Village, Guanqian Street, Suzhou are the best. There are lard rice cakes and brown sugar rice cakes. The glutinous rice flour used to make rice cakes is thin and sweet, and its color is white and bright. The rice cake can be boiled and fried, and it tastes fragrant and sweet. There are four varieties of lard rice cakes, such as rose, osmanthus and jujube paste. Their common characteristics are bright color, rich fat and glutinous rice fragrance, which can be eaten for a long time. People in China eat South Rice Cake and North Rice Cake. Suzhou Rice Cake is a very popular special product in South Rice Cake.