Aerial photo taken on June 5, 2020 shows workers picking goji berries, or wolfberries, at a goji berry planting base in Hongsibao District of Wuzhong City, northwest China's Ningxia Hui Autonomous Region. With a planting area of 6,000 mu (about 400 hectares), the first batch of ripe goji berries was harvested at the planting base on Friday as the harvest season comes. (Xinhua/Feng Kaihua)

A worker packs goji berries, or wolfberries, at a goji berry planting base in Hongsibao District of Wuzhong City, northwest China's Ningxia Hui Autonomous Region, June 5, 2020. With a planting area of 6,000 mu (about 400 hectares), the first batch of ripe goji berries was harvested at the planting base on Friday as the harvest season comes. (Xinhua/Feng Kaihua)

A worker picks goji berries, or wolfberries, at a goji berry planting base in Hongsibao District of Wuzhong City, northwest China's Ningxia Hui Autonomous Region, June 5, 2020. With a planting area of 6,000 mu (about 400 hectares), the first batch of ripe goji berries was harvested at the planting base on Friday as the harvest season comes. (Xinhua/Feng Kaihua)

A salesperson promotes goji berries, or wolfberries, via livestreaming at a goji berry planting base in Hongsibao District of Wuzhong City, northwest China's Ningxia Hui Autonomous Region, June 5, 2020. With a planting area of 6,000 mu (about 400 hectares), the first batch of ripe goji berries was harvested at the planting base on Friday as the harvest season comes. (Xinhua/Feng Kaihua)