According to folklore and historical records, Du Kang, also known as Shao Kang, was the fifth king of Xia Dynasty, the first slave country in China history. According to historical documents such as Historical Records of Xia Benji, when the fourth king of Xia Dynasty was in power, a coup took place and the emperor was killed. At that time, the emperor's wife was pregnant and fled to her family. Du Kang, a teenager, lives by grazing. He hangs his meal on the tree and often forgets to eat it. After a while, Shao Kang found that the leftovers hanging on the tree had changed their taste, and the juice produced was unexpectedly sweet and abnormal, which aroused his interest. After repeated research and thinking, he finally discovered the principle of natural fermentation. He consciously followed suit and constantly improved, and finally formed a complete set of brewing technology, thus laying the foundation stone of China's brewing industry-Du Kang, and the wine he brewed was named "Dukang Wine" ("Shuo Wen Jie Zi")
Records of Baishui County in Ming and Qing Dynasties recorded that "Du Kang, whose real name was Zhongyu, was a Kangjiawei native of our county and was good at making wine". The spring water in Du Kang Gully "still gushed weakly until winter, and flowed for four miles into Baishui River. The villagers said that the water still smells of wine. "
According to legend, Du Kang took some water to make wine, and there are words to prove it: "He is a city wine, full of wine; Liquor alone cures diseases. Therefore, drinking all day long, not indulging; Take it for life and get the sum of qi and blood. A hundred miles away, sell more white wine. Xianze's heritage is unique to the local area. It is also obvious that the remains have been preserved along the trough. "
Du died in Baishui, which is the pride of Baishui people. Du Kang's wine has produced simple customs and ancient white water culture. During the Ming and Qing Dynasties and the Republic of China, there were thousands of boiled pots and four wineries. During the Three Kingdoms period, Cao Cao sang the eternal swan song "Bold and unforgettable, how to solve the worries, only Du Kang": Du Fu, a poet in the Tang Dynasty, wrote beautiful poems "Late at night, the moonlight shines on Baishui Mountain" and "Du Jiu often remonstrates"; Pi Rixiu, a poet in the late Tang Dynasty, also sang the quatrains louder, and the Du Kang language is empty, so the fragrant Du Kang wine spread all over the Loess Plateau.