Ask feng shui experts to talk about it. Why was there no emperor in Jiangnan before the Qing Dynasty?
Let me answer from the history and the customs of the north and the south. Since ancient times, northerners have been belligerent, while southerners have been relatively comfortable. You see whether the ancient city was built in Xi 'an, Kaifeng or Beijing, not in the south. This must be caused by the cultural differences between North and South. Of course, Zhou Yu in the Three Kingdoms period is said to be the ancestor of Zhou Enlai, but he is a real talent in the south of the Yangtze River.