The expo theme song ( 致世博 ) was performed by PRC 's Huang Ying ( 黄英 ) , Liao Chang ( 廖昌永 ) , Tan Jing and Sun Nan . Two Tibetan orphans who survived the earlier 2010 Yushu earthquake joins the stage
2010 Yushu earthquake
2010 Yushu earthquake
2010 Shanghai Expo opening ceremony