Its origin is related to Liu Feng, Liu Bei's adopted son during the Three Kingdoms period.

According to legend, during the Three Kingdoms period, Cao Jun besieged Liu Bei who was stationed in Xinye. Zhuge Liang, a military adviser, designed a fire to Xinye, which relieved Liu Bei. Liu Bi, the magistrate of Fancheng County, gave a banquet to celebrate. When Liu Bei saw a mighty boy in the audience and asked his name, he knew that it was Koufeng, the grandson of Liu Bi, the magistrate.

When serving food, the chef accidentally dropped the meat, and Koufeng picked it up, turned around and threw it into his mouth to eat it. This move caught the attention of Liu Bei. Afterwards, Liu Bei asked Koufeng, "What's the point of swallowing the meat when it falls to the ground?" Koufeng replied: "As a general, you should always have pity on the people. It is hard to get a grain of rice and meat, but it is a pity to abandon it. The foot soldiers are tired all day long and suffer more than enough. Occasionally, they are negligent, and they are patient and reprimand."

Liu Bei was deeply moved and greatly appreciated by Koufeng's virtue, so he accepted Koufeng as his adopted son and changed his name to Liu Feng. The spread of this incident to the army also moved the soldiers. In order to show respect for Liu Feng, the chefs specially cooked a dish called "Meat with Sand" and dedicated it to Liu Feng.

"meat with sand" is made of pork fat, bean paste sugar, egg white, rose sugar, starch and lard through several processes. It tastes crisp outside and tender inside, and the meat is rotten and soft, sweet and delicious, which makes people drool.