Advection fog is seen in Donghu, or the East Lake, and its surrounding areas in Wuhan, capital of central China's Hubei Province, April 6, 2009. [Xinhua]
![Advection fog is seen in Donghu, or the East Lake, and its surrounding areas in Wuhan, capital of central China's Hubei Province, April 6, 2009. [Xinhua]](http://images.china.cn/attachement/jpg/site1007/20090406/000802aa2f490b43e8de4c.jpg "Advection fog is seen in Donghu, or the East Lake, and its surrounding areas in Wuhan, capital of central China's Hubei Province, April 6, 2009. [Xinhua]")