Wang Yih-Jiun was interested in basketball from a young age, but did not get the opportunity to play until the 1940s due to disapproval from his parents. His joined the Air Force near the end of the Chinese Civil War and ended up in Taiwan in 1949, training in the sport with the military team. He joined the national team one year later and won a silver medal at the 1954 Asian Games, in addition to coming in fifth at that year’s World Championships. He defended his silver medal at the 1958 Asian Games and was also a reserve on the Republic of China team at the 1956 Melbourne Olympics, but did not play in any matches because he had broken three ribs shortly before the Games. He retired from active competition in 1959, but soon took up coaching and worked in that capacity through the 1980s.