This combination photo shows farmers working in a mulberry field in Changjia town of Gaoqing county, East China's Shandong province, May 8, 2018 (above, aerial photo); and a farmer taking care of silkworms in Gaocheng town of Gaoqing, June 1, 2018 (below). [Photo/Xinhua]

Workers pack up mulberry enzyme supplement drinks in Gaoqing county, East China's Shandong province, Oct 12, 2018. [Photo/Xinhua]