A citizen shoots the view of an advection fog on a bridge in Liuzhou, south China's Guangxi Zhuang Autonomous Region, Jan. 31, 2014. (Xinhua/Huang Xiaobang)

Photo taken on Jan. 31, 2014 shows the view of an advection fog over the Liujiang River in Liuzhou, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Huang Xiaobang)

Photo taken on Jan. 31, 2014 shows the view of an advection fog over the Liujiang River in Liuzhou, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Huang Xiaobang)

Photo taken on Jan. 31, 2014 shows the view of an advection fog over the Liujiang River in Liuzhou, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Huang Xiaobang)