A farmer picks walnuts in Hotan County, northwest China's Xinjiang Uygur Autonomous Region, Sept. 6, 2019. Hotan County meets the harvest season of walnuts at present. (Photos: Xinhua/Ding Lei)

A farmer washes walnuts at a specialized cooperative in Hotan County, northwest China's Xinjiang Uygur Autonomous Region, Sept. 6, 2019. Hotan County meets the harvest season of walnuts at present.

Farmers sort walnuts at a specialized cooperative in Hotan County, northwest China's Xinjiang Uygur Autonomous Region, Sept. 6, 2019. Hotan County meets the harvest season of walnuts at present.

A farmer sorts walnuts at a specialized cooperative in Hotan County, northwest China's Xinjiang Uygur Autonomous Region, Sept. 6, 2019. Hotan County meets the harvest season of walnuts at present.

A farmer packs sorted walnuts at a specialized cooperative in Hotan County, northwest China's Xinjiang Uygur Autonomous Region, Sept. 6, 2019. Hotan County meets the harvest season of walnuts at present.

A farmer shows harvested walnuts at a specialized cooperative in Hotan County, northwest China's Xinjiang Uygur Autonomous Region, Sept. 6, 2019. Hotan County meets the harvest season of walnuts at present.