The Buffalo Fight in Do Son (Hai Phong
City) is officially held on the 9th day of the 8th month of the lunar
calendar every year. There are, in fact, two rounds of eliminations
before the middle of the 5th month and 8th day of the 6th month of the
lunar calendar. The preparation for this festival is very elaborate.
Fighting buffaloes must be carefully selected, well fed, and trained.