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 arts that prefer the hard over the soft and others that prefer the soft over the hard. Vovinam Việt Võ Đạo does not prefer any over the other. Hard and soft are used equally to adapt to every situation, to every problem. Based on Võ-Thuật, the student aims to develop the ability to combine hard and soft in combat and in daily life. This aims to develop physical abilities as well as the student's spirit. Not only the principle of the harmony of hard and soft but also many other things resulting from the training contribute to internalizing the