Yasuo and Yong En are both characters in League of Legends. League of Legends is a competitive online game between heroes and MOBA, which was developed by RiotGames in the United States and operated by tencent games in Chinese mainland. There are hundreds of personality heroes in the game, as well as special systems such as ranking system and rune system. League of Legends is committed to promoting the development of global e-sports. In addition to developing professional leagues and building an e-sports system, League of Legends will hold three world-class events every year, including League of Legends mid-season championship, League of Legends global finals and League of Legends all-star game, forming its own unique e-sports culture.