When you have really seen some of the world's backward places, the children in the mountains know how happy we are today. Not far from the Tonle Sap Pier, there is an elementary school, just resting after class, a lot of small heads coming out from the narrow corridors, some playing sand balls, some riding bicycles and running, some Whispering. I don't know how Chinese children play now during school hours. Looking at them as if I had returned to my childhood, everyone looked forward to running unscrupulously in the playground after class, jumping ropes and kicking the shuttlecock on the corridor. In just 10 minutes, I also had to hold a football to two feet, and everyones face was filled with a smile. Sometimes, we always make happiness too complicated.