A fisherman replaces worn-out floating balls with new equipment made of new materials in Xiahu Township of Xiapu County, southeast China's Fujian Province, July 17, 2019. Since July in 2018, local authorities of Xiapu County have taken measures to promote transformation and upgrade of mariculture industry including upgrading breeding rafts, replacing worn-out floating balls and expanding shipping lanes. (Xinhua/Jiang Kehong)