China's national flag flies at half-mast after the flag-raising ceremony on Tian'anmen Square in Beijing Monday morning, May 19, 2008. China on Monday begins a three-day national mourning for the tens of thousands of people killed in a powerful earthquake which struck the country's southwest on May 12.

China's national flag flies at half-mast in a Weigongcun residential area in Haidian district, Beijing, capital of China, May 19, 2008. China on Monday begins a three-day national mourning for the tens of thousands of people killed in a powerful earthquake which struck the country's southwestern regions on May 12.

China's national flag flies at half-mast in front of Xinhua News Agency in Beijing, capital of China, May 19, 2008. China on Monday begins a three-day national mourning for the tens of thousands of people killed in a powerful earthquake which struck the country's southwestern regions on May 12.