Villager Yan Shaowen checks color peppers in his own greenhouse at Cuilingxi Village of Shouguang City, east China's Shandong Province, July 7, 2019. Shouguang is a major vegetable producer and distributing center. (Photos: Xinhua)

A staff member loads packaged color peppers in a fruit and vegetable cooperative at Cuilingxi Village of Shouguang City, east China's Shandong Province, July 7, 2019. Shouguang is famous for production of "off-season vegetables" and is a major vegetable producer and distributing center.

Staff members sort and package color peppers in a fruit and vegetable cooperative at Cuilingxi Village of Shouguang City, east China's Shandong Province, July 7, 2019. Every year, the cooperative exports over 15,000 tons of high-quality vegetables to the cities in Russia, with the trade volume exceeding 100 million yuan (about $15 million).

Staff members transfer color peppers at the storehouse of a fruit and vegetable cooperative at Cuilingxi Village of Shouguang City, east China's Shandong Province, July 7, 2019.