Special custom of long summer: weigh yourself and eat yellow sesame seeds cake. When did this custom begin? According to textual research, the custom of eating sesame seed cake was introduced into China from southern Jiangsu during Hongwu period of Ming Dynasty. At the end of the Yuan Dynasty, Zhang Shicheng, a Bai Juchang salt farmer, rose up and established a country in Suzhou, known as Wang Hao in history. After Zhu Yuanzhang came to Zhang Shicheng, he drove a large number of residents of the State of Wu to the coast of northern Jiangsu, which was the historical "Hongwu drive away". After these immigrants settled in China, they still kept the customs of the State of Wu. So, how did the custom of martial arts come from? This can be traced back to Sun Liulian in the Three Kingdoms period. According to legend, during the Three Kingdoms period, Liu's empress Dou was rescued from Cao Jun's million-strong army in Nagano. Because Dou's mother committed suicide by jumping into a well, Liu Bei went with Dou. Later, Zhou Yu fell into a trap by mistake, and Liu Bei married the younger sister of Sun Quan, the prince of Wu, as his second wife. Liu Bei started his career, so it was inconvenient to take it with him, so he gave it to Mrs. Sun. At that time, Mrs. Sun lived in Wu with mild climate and rich products. It is safe and reassuring for her to support Adou. So, Liu Bei prepared many gifts, especially made many steamed cakes, packed into 20 loads, stacked on top of each other, separated by green leaves, and escorted by Zhao Zilong to the State of Wu. When I arrived in Wu, it happened to be the long summer season. Mrs. Sun was very happy to see the chubby little sinus in vain. However, Mrs. Sun also has concerns. After all, she is a stepmother. If there is a mistake, not only is it difficult for the husband to explain, but he will also leave a message inside and outside the court. The beautiful and clever Mrs. Sun thought of a way: today is long summer. Weigh Xiao Adou in front of Zilong with a scale, and then weigh him at the Long Summer Festival in the following year, and you will know whether the child is well raised. After making up his mind, he immediately weighed adzuki bean. Zhao Zilong felt fresh, and he also said an auspicious sentence: "Empress, the child is hooked, safe and well raised." Then, Zhao Zilong happily presented the gifts one by one. But 20 loads of steamed cakes were crushed and deformed. What should I do? He had a brainwave and said, "Mother, according to the custom of Shu, every family should make cakes and give them away every long summer. Please accept it. " Mrs. Sun happily accepted these cakes and shared them with the ladies-in-waiting, who all praised them. Since then, every year during the Long Summer Festival, Mrs. Sun has to weigh adzuki beans, report to Liu Bei that she is safe, and copy a large number of baked wheat cakes for ladies-in-waiting, thus forming the custom of weighing children and eating collapsed cakes during the Long Summer Festival in the south of the Yangtze River. With the migration of immigrants from southern Jiangsu to the north, this custom has spread in Yancheng area to this day.