In Yongchun, there is a long-standing story. When he was in Song Ningzong, he was admitted as a scholar at Yangchun Huyangzhuang in the summer, a tired official, Dr. Taichang, and a doctor who moved to the country, and served as a scholar at the bachelor's college and the prince. Once the prince suffered from parotitis, Zhuang Xia used the old vinegar sent by his hometown to mix the medicine and smear it, and it really worked. The story spread to Emperor Song Ningzong, where he was greatly appreciated and personally tested Yongchun's old vinegar, and he felt that it was sour and fragrant. At that time, Ning Zonglong was in poor health, often with abdominal distension and qi stagnation, loss of appetite, and the physician tried his best to fail. At that time, he listened to Zhuang Xia's introduction, and after eating Yongchun old vinegar, the dragon turned to safety. From then on, Ningzong imperial cuisine always put a pot of Yongchun old vinegar, which became famous and became a traditional specialty.