On a summer’s day while taking a walk with classmates from Fugong No.1 High School in Nujiang,Shuang Fuwei heard the cries for help.He rushed to the river and saw three girls struggling in the water.Six girls had been playing by the river on June 30,2012when a huge wave surged onto the beach and swept away three of them.Three of the six had managed to escape the wave,but the high-schooler saw the other three girls in the surging water.