From the movies "Fearless", "Ip Man", and "Drunken Master"(films) respectively. In 2 scenarios.
1) The fight takes place on a platform like the ones that Ip Man and Yuan Jia took their fights on. No weapons. Winning conditions are standard for those platforms. Knocking opponent off wins etc.
2) The fight takes place in a crowded market of a turn of the century Chinese town. Fight ends when to fighters are no longer able to fight.
P.S Yes Fei-Hung is allowed booze in both scenarios. By drinking before the match in scenario 1 and near by bars and stores in scenario 2.
Bonus question. For those familiar with them. Who would win if the historic name sakes of these 3 characters went at it. Say in a standard Khazan match.