Yu Xiaoguang (于晓光), also known as Ethan Yu and Yu Liguang (于立桄), is a Chinese actor and music composer. Yu is a former swimmer and sprint canoer. In 2006, he made the crossover from sports to films. Yu Xiaoguang (于晓光), also known as Ethan Yu and Yu Liguang (于立桄), is a Chinese actor and music composer. Yu is a former swimmer and sprint canoer. In 2006, he made the crossover from sports to films.