Workers peel sweet potatoes at a modern agricultural center in Buliu town, Rongcheng, a county-level city in Weihai, Shandong province, on Nov 17. [Photo/dzwww.com]

Farmers make sweet potato slices at a modern agricultural center in Buliu town. By cooperating with enterprises and establishing cooperatives, the town has been able to promote the cultivation, sale, and deep-processing of sweet potatoes. [Photo/dzwww.com]

Sliced sweet potatoes are steamed at a modern agricultural center in Buliu town. Sweet potatoes have helped increase incomes of local farmers. [Photo/dzwww.com]

Workers dry sliced sweet potatoes at a modern agricultural center in Buliu town. The town has been using e-commerce platforms to boost sales of its dried sweet potatoes. [Photo/dzwww.com]