Ren Yongshun was the product of the Shandong Luneng youth system where he eventually graduated to the senior squad during the 2003 league season.
[1] Unable to establish himself within the Shandong team he would transfer to Wuhan Guanggu at the beginning of the 2007 league season with fellow Shandong teammates Deng Xiaofei, Guo Mingyue and Li Zhuangfei.
Taking time to establish himself within his new team Ren Yongshun eventually made his debut on August 26, 2007 against Shanghai Shenhua in a 0-0 draw.
[2] This was followed by several further league appearances, however the 2008 Chinese Super League season was to prove a difficult period for him as he quickly lost his place within the Wuhan team, this was added by Wuhan being ejected and subsequently relegated from the Chinese Super League after the club's management did not accept the punishment given to them by the Chinese Football Association after a scuffle broke out during a league game against Beijing Guoan on September 27, 2008.
[3] Without a football club to play in during the 2008 league season Ren Yongshun transferred to second tier football team Jiangsu Sainty and helped them fight for promotion to the Chinese Super League.