According to legend, in the Qing Dynasty, Fei Yi just gave birth to a prince. Because Fei Yi had stomach trouble and was weak after delivery, Gan Long ordered the chef to stew tonic for Fei Yi, but she had no appetite for anything, and her body became thinner and thinner. The imperial doctor in the palace tried his best to make all kinds of precious tonics for Fei Yi, but to no avail. Kangxi summoned the imperial doctor and the chef to deliver a decree that Fei Yi's illness would be cured by any means. The chef thought of the method that "medicine is better than food", so he improved the traditional folk practice of eating chicken soup in confinement, put the chicken in the pig's belly and stew the soup with precious herbs. After eating, Fei Yi really had a big appetite. After a period of diet conditioning, Fei Yi's stomach trouble has healed, and her skin color is ruddy, shiny and beautiful. This dish not only cures diseases and strengthens the body, but also has the effect of health care. Since then, Qianlong has called this dish "Phoenix Reincarnation", which is now Wuhuaji Hot Pot, and it has been widely circulated among the people since then.