YANTAI, Jan. 20, 2016 (Xinhua) -- Policemen from Yangma Island Frontier Police Station check the situation of sea ice and reinforce ships on the shore in Yantai, east China's Shandong Province, on Jan. 20, 2016. Continuous temperature-dropping and snowing weather accelerated the expansion of sea ice in the Yellow Sea and the Bohai Sea. Part of inshore cultivation area was frozen. (Xinhua/Zhu Zheng)
