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Areial photo taken on Jan. 9, 2019 shows the forest rangers setting off for patrolling at Daqing Mountain provincial forest park in Laixi City, east China's Shandong Province. The team of forest rangers, whose average age is above 40, have worked at Daqing Mountain provincial forest park for many years. There haven't been any wild fire accidents in Daqing Mountain for 15 years under their protection. (Xinhua/Ding Hongfa)
