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 Odyssey while delivering his standard greeting: "“Hey, I’m Antonio Graceffo. And this is Martial Arts Odyssey. Today we are in (name of the location). And we are learning (name of martial art). With me today is (name of instructor).”" Every episode includes training sequences, including some involving Antonio sparring with different martial artists. In addition, the show contains interviews with practitioners of the profiled martial art, as well as details of local culture and history in the area where these arts were founded. Antonio describes himself as a martial arts anthropologist. In various episodes Antonio can be heard speaking with his