Every year Cambodian people always celebrate their traditional water festival on the Mekong river in front of the rayal palace. This ceremony is held for three days. There are 366 boats racing participate in this competition.. In one boat there are at least 50 boat racers. They celebrate this ceremony to thank the water for helping their rices grow well.This month is a free month after they harvested their rices. There are more than 3000000 people go to enjoy in this ceremony .