People lay flowers to mourn for the victims of the earthquake during a memorial ceremony marking the 15th anniversary of the Wenchuan Earthquake at the ruined site of Xuankou Middle School in Yingxiu township of Wenchuan county, Southwest China's Sichuan Province, on Friday. (Photo: CFP)

Photo taken on Monday shows a cross with flowers and toys underneath in front of an outlet mall in Allen, Texas, the United States. Eight people died and at least seven others were wounded after a shooter opened fire at the outlet mall in Allen on Saturday afternoon. The gunman was killed by a police officer. (Photo: Xinhua)

Tourists have fun at a themed street in Xi'an, Northwest China's Shaanxi Province, on Thursday. (Photo: Xinhua)

A military parade is held to mark the 78th anniversary of the Soviet victory in the Great Patriotic War, Russia's term for World War II, on Red Square in Moscow, Russia, Tuesday. (Photo: Xinhua)

This aerial photo taken on Monday shows people enjoying Zibo-style barbecue cuisine in Linzi district of Zibo, East China's Shandong Province. (Photo: Xinhua)

A Palestinian woman looks out from her damaged window following an airstrike in Gaza City, on Tuesday. (Photo: Xinhua)

Photo taken at a flower store in Yokohama, close to Tokyo, on Tuesday shows Mother's Day bouquets made with flowers grown in China's Yunnan Province. (Photo: CFP)

A farmer works in a terraced field in Fengyu township of Dali Bai autonomous prefecture, Southwest China's Yunnan Province, on Tuesday. (Photo: Xinhua)

A member of the media takes a closer look at the head of a 'dinosaur' during a behind-the-scene preview of the Jurassic World Live Tour show in Vancouver, British Columbia, Canada, on Friday. (Photo: Xinhua)

A giant panda plays at the Chengdu Research Base of Giant Panda Breeding in Southwest China's Sichuan Province, on Thursday. (Photo: CFP)