Chinese mergansers fly over the Xingjiang river in Shijian cillage, Wuyuan county, East China’s Jiangxi province, Dec 25, 2017. Wuyuan county is now a popular destination for Chinese mergansers that come here during the winters.[Photo/Xinhua]

Chinese mergansers are seen in the Xingjiang river in Shijian village, Wuyuan county, East China’s Jiangxi province, Dec 25, 2017. Wuyuan county is now a popular destination for Chinese mergansers that come here during the winters.[Photo/Xinhua]

A Chinese merganser is seen in the Xingjiang river in Shijian village, Wuyuan county, East China’s Jiangxi province, Dec 25, 2017. Wuyuan county is now a popular destination for Chinese mergansers that come here during the winters.[Photo/Xinhua]