As the saying goes, harvest in autumn, and store grain in winter. It's time to eat sweet potatoes. Sweet potatoes take pride of place in the vegetable markets of Zhengzhou. With sweet and soft taste, or with a chestnut flavor and less fiber, this kind of sweet potato is deeply loved by Zhengzhou people.

Sweet potatoes were widely planted in the Yellow River area of Zhengzhou from 1840 to 1949. Sweet potatoes had been the staple food for people along the Yellow River until the 1960s and 1970s.