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
Chinese martial arts Chinese martial arts became available from the Nanjing decade (1928–1937), as the Central Guoshu Institute established by the Kuomintang regime made an effort to compile an encyclopedic survey of martial arts schools. Since the 1950s, the People's Republic of China has organized Chinese martial arts as an exhibition and full-contact sport under the heading of "“wushu”". According to legend, Chinese martial arts originated during the semi-mythical Xia Dynasty (夏朝) more than 4,000 years ago. It is said the Yellow Emperor (Huangdi) (legendary date of ascension 2698 BCE) introduced the earliest fighting systems to China. The Yellow Emperor is described as