People's Artist Dao Mong Long (January 7 , 1915 - August 9 , 2006 ) was a Vietnamese actor, director, and playwright. One of the few Northern Vietnamese to gain prominence in Cải lương, he was an influential figure in the development of this genre, having written a series of popular cải lương plays and coached many popular artists of the later generations including Kim Cương and Thanh Tòng.