在经历了第一场约20万人的试运行演练后，中国2010年上海世博会21日举行第二场试运行演练，观摩人数约5万人。为表达对青海玉树地震遇难同胞的深切哀悼，世博园区停止了所有文化演出活动，并降半旗志哀。
All cultural performances at the Expo site are suspended today in the second trial run of the event as China has declared a national day of mourning today to honor more than 2,000 people killed by an earthquake in northwest Qinghai Province.

China ordered flags to be flown at half mast and a halt to all entertainment, including online games and sports events, for the day of mourning.

The death toll from the magnitude-7.1 quake in the Yushu Tibetan Autonomous Prefecture rose yesterday to 2,064, rescue headquarters reported. More than 12,130 were injured and 175 were still missing, it said.