Chinese national flag on the roof of telegraph building flies at half-mast to mourn the victims of Yushu earthquake, in Beijing, China, April 21, 2010. [Xinhua]

Chinese national flag is lowered to half-mast to mourn for the victims of Yushu earthquake, at the Golden Bauhinia Square in south China's Hong Kong Special Administrative Region (HKSAR), April 21, 2010. [Xinhua]