In 2008, I spent almost two months in Shanghai, China. My shared flat was in an outskirt of Shanghai and the Kindergarten was at walking distance. The Chinees school system is very regulated and disciplined, even for young children. It was very warm that summer, close to 40 degrees Celsius. When the children behaved well, they were aloud to have a water fight around noon. The children kept their own water pistol in a basket at the school. They stripped down to their underwear and off they went. Running, laughing, playing and cooling down!