Wang Yansheng was born in China. Around 1990 he emigrated to Norway. Under the Norwegian flag he took part in the 1991 World Championships, where he reached the quarter-finals in doubles. He was also nominated for the European Championships in 1990 and 1992, where he failed in the 1990 singles quarter-finals against Poland's Andrzej Grubba. At the Northern European Championships (“Nordic Championships”) he won the individual and came second in the mixed doubles with Marianne Blikken. Wang Yansheng has been playing for German clubs since 1987. First he joined Germania Schnelsen from Hamburg, where he played in the table tennis Bundesliga for two years. In 1989 he moved to the then second division club VfB Lübeck, with whom he was promoted to the 1st Bundesliga in 1990 and again in 1998 - now under the name "Team Galaxis Lübeck". In 1998 he received German citizenship. In 1999 he left Lübeck. He finally came to the club via the club stations TTC Frickenhausen (1999/2000), DJK Offenburg (2000/01), Hertha BSC (2001/02) and Hamburger SV (2002–2005). SV Siek, with whom he was promoted from the Regionalliga to the 2nd Bundesliga in 2007. In Siek he was active as a player and coach for 14 years in around 250 league games until 2019. In 2019 he left the club and joined the upper division club Oldenburger TB. In 2010, Wang Yansheng came second at the Senior World Championships in the over-40 age group. Two years later he won bronze in the AK50 singles and doubles with the Australian Lu Qiwei. In 2018, Yansheng Wang won the World Championships in Las Vegas for seniors in the over 55 group, in 2023 he won the AK55 doubles with the Austrian Roland Böhm.