However, Li Guang, a famous Han Dynasty star, did not teach Huma to "fly" over Yinshan Mountain. He was brave and good at fighting, pretended to defeat the Xiongnu, abandoned his armor and fled. To tell the truth, there are few pots and pans left, and he is worried when cooking. Li Guang ordered the soldiers to take off their helmets as kettles, use plants as chopsticks, put the dough in their helmets and cook it in wild vegetables. The three armies were full and refreshed, and the barbarians were lured into the shortlist, but they won a great victory and returned to the DPRK. When Emperor Wu of the Han Dynasty heard about it, in order to save the three armed forces, he ordered the chef to imitate his method and do it. It is said that the Huns regard crows as auspicious birds, and this kind of food looks like crows' heads. Therefore, Emperor Wu of the Han Dynasty named this kind of food "Old Man Sa", which means that mountains and rivers are forever solid, and barbarians can no longer disturb them. Lao Sa is popular in the court. In the Tang dynasty, this kind of food was introduced to the people and prevailed in Guanzhong. Ordinary people watch "Flying General" for convenience, and it becomes more and more diversified after a long time.