Simply put, it is delicious food. Delicious enough to shake the "three musts" status of grilled vegetarian dishes of eggplant, potatoes and leeks, so delicious that a group of food bloggers rushed to the store to evaluate them, so delicious that they were listed as tributes as early as the Qing Dynasty.

To the west of Qianjiang River and to the east of Wulong, the soil and sweet potatoes in Pengshui County wrote the most daily poems of ordinary people, and the sweet potato skin became the protagonist of thousands of families. Here, almost every household grows sweet potatoes, and making sweet potatoes has a long history.