The name of sweet potato is called Jinshu by people, Wenlai by place, Yuzhen and Sweet Potato by names. In Peiping, there was originally a kind of white potato, also known as white potato. In addition, it was also called red yam and sweet potato. There were many names, but one of them was sweet potato. The name of sweet potato was found in Jin Ji Han's "Southern Vegetation and Trees", which said: "Sweet potato is covered with yam and the like, or taro. The roots and leaves are like taro, and it is like a fist. It is like an ou. The skin is purple and the flesh is white when cooked. When eaten, it tastes like yam and is not very cold in nature. People in the sea in the old Zhuya land do not cultivate crops, but dig the ground to grow sweet potatoes. Harvest them when they are ripe in autumn, steam and dry them, cut them into grains and store them in the warehouse to supplement your food supply. Ji is a native of the Jin Dynasty. It can be seen that sweet potatoes were already available in China during the Jin Dynasty. How could we wait for the introduction of Indians in the 18th century? How could we wait for the introduction of Westerners from the East in the late Ming Dynasty? I did this. Examination, isn’t it troublesome? Yes and no. Xu Guangqi's "Encyclopedia of Agricultural Affairs: Sweet Potato Sparing" says: "There are two kinds of sweet potatoes in Fujian and Guangzhou, one is mountain potato, which is inherent in it, and the other is sweet potato, and some people got this kind from overseas." So the so-called sweet potato in Ji contains is probably the same as mountain potato. They are native to China. He looked at them and said: "Maybe they are called taro, and the roots and leaves are also like taro." He hesitated in his words, and it must not be the sweet potatoes we eat today. The sweet potatoes we eat today come from overseas and are well-founded according to the records of the Ming and Qing Dynasties. Sweet potatoes were introduced to China around the Ming Dynasty. According to the first article on the origin of sweet potatoes, it is said that in the 22nd year of Wanli Emperor Shenzong of the Ming Dynasty, that is, 1594 AD, there were two people from Guangdong and Fujian who first brought the sweet potato to China. , as well as Lin Huailan and Chen Jinglun. It was brought from Guangdong by Lin Huailan and obtained from Jiaozhi; it was brought from Fujian by Chen Jinglun and obtained from Luzon. The whole story of the introduction from Jiaozhi to Guangdong is stated in "Miscellaneous Records" in Volume 30 of "Dianbai County Chronicle" of Guangdong: "There is a sweet potato Lin Gong Temple in Xiadong Township. Cui Miyun, the deputy leader, led the villagers to build it. It is said that sweet potatoes came out of Jiaozhi and were strictly prohibited by the Chinese. Anyone who planted them in China would be punished with death. Lin Huailan, a native of Wuchuan, was a good doctor. He traveled extensively in Jiaozhou and his treatment would be effective. Because the king's daughter was recommended to be a doctor, she was cured. One day, she was given cooked sweet potatoes, and Lin asked for food. She left half pregnant, and sent a letter to return to China. After passing the customs, she was cleansed by the general. Lin Yizhen responded and asked for help. General Guan said: "What happened today is that I was disloyal to the emperor, but I felt that my husband was righteous and betrayed his unrighteousness." So he went to the river to die, and planted it in Guangdong, where he is worshiped in the temple. , next to it is matched with Guan Jiang. "It is a kind of sweet potato from Guangdong. It was obtained from Jiaozhi. Lin Huailan, a doctor from Wuchuan, stole it. After Guan Jiang died, it took a lot of trouble to reach the Central Plains. To this day, the people are living well, and the merits of Duke Lin and the death of General Guan are indispensable. The establishment of a temple to commemorate him is indeed a memorial.