Photo taken on July 8, 2013 shows a picture of Wang Linjia (R) and Ye Mengyuan on a mobile phone, at Jiangshan Middle School in Jiangshan, east China's Zhejiang Province. Two Chinese passengers, Wang Linjia and Ye Mengyuan, were killed in a crash landing of an Asiana Airlines Boeing 777 at the San Francisco airport on Saturday morning. The two girls are both students of Jiangshan Middle School. Their family members headed for the United States on Monday. Photo: Xinhua

People light candles during a commemorating ceremony to mourn the death of Wang Jialin and Ye Mengyuan, two young girls killed in a crash landing of an Asiana Airlines Boeing 777 at San Francisco airport, in Jiangshan City, east China's Zhejiang Province, July 8, 2013. Local residents gathered at Xujiang Park in Jiangshan to show their grief to the 17-year-old Wang and 16-year-old Ye, who were students from Jiangshan High School. Photo: Xinhua

Several students fly a Kongming lantern to mourn the death of Wang Jialin and Ye Mengyuan, two young girls killed in a crash landing of an Asiana Airlines Boeing 777 at San Francisco airport, by the riverside in Jiangshan City, east China's Zhejiang Province, July 8, 2013. Local residents gathered at Xujiang Park in Jiangshan to show their grief to the 17-year-old Wang and 16-year-old Ye, who were students from Jiangshan High School. Photo: Xinhua

Students light candles to mourn the death of Wang Jialin and Ye Mengyuan, two young girls killed in a crash landing of an Asiana Airlines Boeing 777 at San Francisco airport, in Jiangshan City, east China's Zhejiang Province, July 8, 2013. Local residents gathered at Xujiang Park in Jiangshan to show their grief to the 17-year-old Wang and 16-year-old Ye, who were students from Jiangshan High School. Photo: Xinhua

People hold flowers to mourn the death of Wang Jialin and Ye Mengyuan, two young girls killed in a crash landing of an Asiana Airlines Boeing 777 at San Francisco airport, in Jiangshan City, east China's Zhejiang Province, July 8, 2013. Local residents gathered at Xujiang Park in Jiangshan to show their grief to the 17-year-old Wang and 16-year-old Ye, who were students from Jiangshan High School. Photo: Xinhua

Photo taken on July 8, 2013 shows a composition by Wang Linjia at Jiangshan Middle School in Jiangshan, east China's Zhejiang Province. Two Chinese passengers, Wang Linjia and Ye Mengyuan, were killed in a crash landing of an Asiana Airlines Boeing 777 at the San Francisco airport on Saturday morning. The two girls are both students of Jiangshan Middle School. Their family members headed for the United States on Monday. Photo: Xinhua

Jiang Jianming, the Chinese teacher of Wang Linjia, puts Wang's books away at Jiangshan Middle School in Jiangshan, east China's Zhejiang Province, July 8, 2013. Two Chinese passengers, Wang Linjia and Ye Mengyuan, were killed in a crash landing of an Asiana Airlines Boeing 777 at the San Francisco airport on Saturday morning. The two girls are both students of Jiangshan Middle School. Their family members headed for the United States on Monday. Photo: Xinhua