Zhu Yuanzhang, the founder of the Ming Dynasty, was born in Xuyi, Jiangsu. He has been a farmer for generations and his family is very poor. Later, due to hunger and famine, he moved to Fengyang, Anhui. Therefore, everyone thinks that Zhu Yuanzhang is from Fengyang, and Zhu Yuanzhang's grandfather is a familiar person. He often jumps into the deep pool to fish. He is both free and skillful, so many people call him "Xiahai". Once, Xiao Dehai came out fishing from the bottom of the lake. He met a famous Feng Shui master in Jiangsu Province: a Feng Shui master named Liu, who had been searching for a dragon for years. He has been looking for Feng Shui dragon veins, crossing mountains and rivers to the pond. He saw Zhilong's cave at the bottom of the pool. Because he didn't know the nature of water, he couldn't go into the pool and form a dragon.