Legend has it that after Qin Shihuang unified the seven countries, he began to pacify the land of Baiyue in Lingnan area. In 2 19 BC, Qin Shihuang appointed Tusui as the general commander and Zhao Tuo as the deputy commander, led 500,000 troops to pacify Lingnan, and the army advanced to Lingnan. Because Lingnan belongs to the East Asian monsoon climate zone, it has the characteristics of tropical and subtropical monsoon maritime climate. The soldiers of the Central Plains did not adapt to the humid climate in the south, and they fell ill one after another, greatly reducing their combat effectiveness and losing many battles. Just when all the soldiers were at a loss, the military doctor developed a kind of porridge for both medicine and food. Lotus seed, lily, adenophora adenophora, spiny stone, Polygonatum odoratum, yam and coix seed are used as raw materials and processed into paste. After taking it, people feel calm and full of energy, and the army goes forward bravely. Zhao Tuo said with emotion that food can clear away heat, replenish vitality and make things cool. In order to ensure combat effectiveness, Zhao Tuo ordered his men to eat a bowl of refreshing food every morning. After the demise of the Qin Dynasty, Zhao Tuo rose up, annexed Guilin County and Xiang Jun County, and established Nanyue State in Lingnan area, calling himself the "King of Nanyue". Its capital, Panyu, is now Guangzhou. After 66 years in office, he is a veritable "longevity Weng".
China's medicated diet has a long history, which is widely circulated from the court to the people. According to the statistics of relevant scholars, from the early Han Dynasty to the late Ming Dynasty, there were more than 300 books about medicinal diet. Nowadays, the works on dietotherapy and medicated diet are colorful and widely used, and even some special medicated diet restaurants have appeared. In people's lives, medicated diet has been deeply rooted in people's hearts, and it also enjoys a high reputation abroad, which is highly favored. Medicinal diet is an important part of traditional diet and traditional medicine in China.