A paramilitary policeman patrols near the Chinese national flag at half mast in Tiananmen Square in Beijing on August 15, 2010. China observed a national day of mourning on Sunday for the victims of last weekend's massive landslide in a remote part of its northwest, which killed more than 1,200 people when a torrent of mud swept through a town. [Photo/Agencies] 

Visitors walk past lines of cloth shoes placed at a park during a memorial service in Nanjing, East China's Jiangsu province on August 15, 2010. The 6,830 pairs of shoes represent the number of Chinese who were brought to Japan for forced labor during World War II.