Vovinam to demonstrate Vovinam publicly in Hanoi with his disciples in 1940, Nguyễn was invited to teach the art at Hanoi's Ecole Normale, and Vovinam gained in popularity. During the following years, political unrest increased throughout Vietnam; due to the system's nationalist political orientation, the art came under suppression. By 1954, Nguyễn had emigrated to South Vietnam, where he was able to continue to teach and establish Vovinam schools. After his death in 1960, Grandmaster Le Sang continued the development and international promotion of Vovinam until his own death on September 27, 2010. The first Vovinam school outside of Vietnam was
Martial arts question of "which is the best martial art" has led to inter style competitions fought with very few rules allowing a variety of fighting styles to enter with few limitations. This was the origin of the first Ultimate Fighting Championship tournament (later renamed UFC 1: The Beginning) in the U.S. inspired by the Brazilian Vale tudo tradition and along with other minimal rule competitions, most notably those from Japan such as Shooto and Pancrase, have evolved into the combat sport of Mixed Martial Arts (MMA). Some martial artists compete in non-sparring competitions such as breaking or choreographed routines of techniques