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 County, east China's Shandong Province, June 1, 2018 (below). The cultivation of mulberry trees and silkworms is a long-standing agricultural practice in Gaoqing County. In addition to a market-oriented business strategy, the local authorities encourages innovation and research to develop a green and sustainable mulberry-related industry, which not only produces mulberry leaves, but also turns out silk fabrics, mulberry leaf tea, mulberry alcohol, dried mulberry fruits and other derivative products. (Xinhua/Zhang Weitang)