Cleaners clear the water hyacinth, a rapidly growing floating plant, to protect the water environment on the Langjiang River in Liuzhou City, south China's Guangxi Zhuang Autonomous Region, May 8, 2017. (Xinhua/Li Hanchi)
Aesthetic Group Gymnastics World Championships held in Finland
Dragon boat competition held in east China's Anhui
Aerobatics aircraft perform at air show in C China's Henan
Oslo Medieval Festival marked in Norway
10th Int'l Antiques Fair held in Hong Kong
Systematic excavation of dinosaur fossils launched in NE China
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