Photo taken on April 8, 2013 shows icicles on plum blossoms in Hami, Northwest China's Xinjiang Uygur Autonomous Region. Icicles are seen on tree branches and blossoms in Haimi due to sharp drop of temperature. (Xinhua/Cai Zengle)  

Photo taken on April 8, 2013 shows icicles on tree branches in Hami, Northwest China's Xinjiang Uygur Autonomous Region. Icicles are seen on tree branches and blossoms in Haimi due to sharp drop of temperature. (Xinhua/Cai Zengle)

Photo taken on April 8, 2013 shows icicles on tree branches in Hami, Northwest China's Xinjiang Uygur Autonomous Region. Icicles are seen on tree branches and blossoms in Haimi due to sharp drop of temperature. (Xinhua/Cai Zengle)

Photo taken on April 8, 2013 shows icicles on plum blossoms in Hami, Northwest China's Xinjiang Uygur Autonomous Region. Icicles are seen on tree branches and blossoms in Haimi due to sharp drop of temperature. (Xinhua/Cai Zengle)

Photo taken on April 8, 2013 shows icicles on plum blossoms in Hami, Northwest China's Xinjiang Uygur Autonomous Region. Icicles are seen on tree branches and blossoms in Haimi due to sharp drop of temperature. (Xinhua/Cai Zengle)

Citizens walk past tree branches with icicles in Hami, Northwest China's Xinjiang Uygur Autonomous Region, April 8, 2013. Icicles are seen on tree branches and blossoms in Haimi due to sharp drop of temperature. (Xinhua/Cai Zengle)

Citizens walk past tree branches with icicles in Hami, Northwest China's Xinjiang Uygur Autonomous Region, April 8, 2013. Icicles are seen on tree branches and blossoms in Haimi due to sharp drop of temperature. (Xinhua/Cai Zengle)

A citizen takes pictures of icicles in Hami, Northwest China's Xinjiang Uygur Autonomous Region, April 8, 2013. Icicles are seen on tree branches and blossoms in Haimi due to sharp drop of temperature. (Xinhua/Cai Zengle)