Students holding flowers pay a silent tribute to the martyrs died in the War of Resistance against Japanese Aggression, during a commemorating event at the site of Lugouqiao Bridge in Beijing on July 6, 2012, to mark the 75th anniversary of the Marco Polo Bridge Incident happened on July 7, 1937. [Photo/Xinhua]

Women, wearing nylon masks, swim in the water during their visit to a beach in Qingdao, Shandong province July 6, 2012. The mask, which was invented by a woman about seven years ago, is used to block the sun's rays. The mask is under mass production and is on sale at local swimwear stores. [Photo/Agencies]

Players compete on July 6 in the Chinese leg of the British Mud Soccer Cup in Beijing's Olympic Park. The event attracted 32 teams. Photo by Wang Jing / China Daily