It can still be found in Peru  Mexico today. The ancient Native Americans discovered the tuberous roots of wild sweet potatoes during the excavation of underground rhizome food,  then continuously replanted them through their roots, domesticated them into cultivated crops. Artificial cultivated sweet potato tubers dating back 8000 years have been discovered in ancient tombs in Peru, indicating that sweet potatoes have been cultivated in the Americas for 8000 to 10000 years.

The processing of dried potato was first carried by Chinese merchants to Manila  the southeast coast of China,  then by Spanish merchants to Acapulco on the west coast of North America by big sailboats; On the return journey, they carried the silver abundant in the Americas back to Manila,  Spanish merchants used this silver to purchase goods transported by Chinese merchants.

Zhou Lianggong quoted He Qiaoyuan's "Ode to Sweet Potato" in the volume of "Sweet Potato" in his "Min Xiaoji",  mentioned that sweet potato, as a crop for famine preparation, is easy to grow  high-yielding, which has played a major role in the poor people: more fecal treatment, more rain, that is, no fecal treatment in severe drought,  no loss of size. The people of Zhangzhou thought it a secret when they first came across this kind of thing. Which company is good for processing dried potatoes