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
Vovinam martial art philosophy, e.g. fighting spirit, courage, tenacity, fairness, modesty and tolerance. Above all the training in morality and the way of applying the techniques shape the students' character. Emphasis is placed on recognizing one's ego and overcoming it. In doing so the Vovinam student will gain generosity and tolerance with other people. With the awareness that the most important thing in a human's life are other humans, the final goal is to be able to not only help oneself but also to help others to live in peace and harmony with their surroundings. With the salutation "Iron Hand over