According to legend, when Emperor Wuzong of Ming Dynasty died, he was afraid that his prince, Prince Shizi, would mess up state affairs for the throne, and left a testament when he died. "No matter which prince or prince, the one who goes to Beijing first is the king, and the one who goes to Beijing later is the minister." Wang Shizi Zhu Hougan, who lived in Zhongxiang at that time, was the farthest from Beijing, but he really wanted to be an emperor. What should he do? Zhu Hougui wanted to go to another prince, who was near Beijing. When the emperor was in the bag, he would definitely go to Beijing with great fanfare. In order to settle him, the officials of various governments and counties would inevitably have a small banquet every three days and a big banquet every five days, which would inevitably delay time. And Zhu Hougan wants to pretend to be a criminal in Beijing, and he will grab the lead unexpectedly without anyone knowing it.
But then again, Zhu Hougui grew up eating delicacies in the palace. Now he wants to pretend to be a criminal, but if he wants to eat that kind of food, it won't arouse others' suspicion! And what if he can't eat without food? So he ordered the cooks in the whole city to make a kind of food that eats meat but doesn't see meat overnight, otherwise they would all be beheaded. Gal can be anxious to pregnant with the city's cooks, only desperately trying to find a way. A cook slept at the end of the night, and his wife gave him two sweet potatoes to satisfy his hunger. As soon as he had a feast, he had an idea. I boned fish and meat, peeled and chopped them, ran away from the blood, wrapped them in red egg skins and steamed them, and ate them with my hands. Isn't it just like sweet potatoes? He made a few overnight, and sure enough, they were delicious. He sent them to Zhu Hougui to taste and praised himself. So Zhu Hougui pretended to be a Qin offender, ate this kind of "sweet potato" made of fish and meat along the way, and became the emperor in Beijing first, which was later Emperor Jiajing.
Who knows that Emperor Jiajing was addicted to sweet potatoes, so he decided to make it the "imperial dish" of the court. But how could the emperor at that time chew sweet potatoes? Jiajing renamed this kind of "sweet potato" as "Panlong dish" and cut it into pieces, such as a dragon-shaped dish in a plate and eaten with chopsticks, so you don't have to chew it in your hand anymore.