After the Jingkang Rebellion, the Song Dynasty moved its capital to Lin 'an, which is today's Hangzhou. Suzhou and Hangzhou in the Song Dynasty all belong to Jiangnan Road. With the migration of the capital, a large number of people came to the south from Kaifeng and other places. In the era of war, the traffic was underdeveloped. Everyone who can travel thousands of miles south is a powerful person. As a political center, Hangzhou has many official residences, while Suzhou (Pingjiang House) is the economic center of the south of the Yangtze River, with many businessmen. Although these people are getting used to rice. Therefore, wheat was gradually planted to the south of Huaihe River. So Suzhou people especially like to eat noodles.