Zhu Shouqian, the nephew of Zhu Yuanzhang in the Ming Dynasty, named King Jingjiang, the vassal state of Guilin. At that time, Guilin was an important town in the west of Lingxi, and the table of Wuling was laid. The local ecological resources and natural environment have created a large number of sugarcane forests. The local area is rich in black-skinned wisteria, and the people have cooked brown sugar and brown sugar for generations. So Zhu Shouqian, king of Jingjiang, also asked the army to plant this black wisteria. At that time, there was a steward in Wang Fu named Guan Sheng, who mastered the cultivation techniques of this black-skinned wisteria. And passed this technology on to his descendants, so the descendants of officials, students and administrators lived in Guilin to cook sugar, and later the descendants of officials, students and administrators spread this planting technology and sugar cooking technology to Yunnan. In the fifty-two years of Qing Qianlong, Annan rebelled and disturbed Yunnan. In order to avoid the war, the whole family moved to Guangdong, and the core sugar cooking technology inherited from Lingnan ancient law remained in Guangdong. Because the official brown sugar has its own characteristics, and brown sugar is a natural food of black-skinned purple sugarcane without high honey refining, it retains the most primitive nutrition and minerals, and is purer and more nutritious than brown sugar, so it is loved by official wives and rich wives. However, the production process of official brown sugar is complicated. Nearly 100 kg of sugarcane can only cook 5 kg of brown sugar and 5 kg of sugar a day, which is as precious as gold, so everyone calls him "official gold". Gold is slightly the same as recording. In the long run, people call this brown sugar "official record". It is said that when Yu Chenglong was governor of Guangdong and Guangxi, he once brought "official history" brown sugar to Kangxi, and Emperor Kangxi was very happy. Later, it was said that Qianlong and Empress Dowager Cixi had a special liking for this brown sugar. There is no textual research on folklore.
However, "inheriting the traditional national skills and inheriting the original flavor of Lingnan ancient brown sugar" has always been the constant pursuit of officials and students!