Fishermen unload scallops at a wharf in Ruhe Town of Changli County, north China's Hebei Province, Oct. 8, 2018. In recent years, the local government has carried out many measures to ensure sustainable scallop fishing. This year, the scallop output of Changli is expected to reach 180,000 tons and achieve an annual value of over 115.7 million U.S. dollars. (Xinhua/Yang Shiyao)