Career
Foreign the next two seasons he would go on to play understudy to Gao Jianbin and go on to make thirteen league appearances during the periods that Gao Jianbin was injured, however being unable to permanently claim the first choice goalkeeping position Song would be loaned out to Chongqing Lifan and his hometown football team Dalian Shide. After his loan period expired with Dalian Shide the club would decide to make a permanent move for Song where he played understudy to An Qi and made nine league appearances. At the beginning of the 2005 league season Song would rejoin his first club Sichuan Quanxing (who had renamed themselves Sichuan Guancheng) and would immediately become the team"s first choice goalkeeper and helped guide the club to a ninth-place finish at the end of the season, however this wasn"t enough for Sichuan in stopping them disbanding the team
In the 2006 league season Song moved to Shenyang Ginde where he rose to prominence becoming their first choice goalkeeper.
The following season would see him continue his establishment within the team despite the club deciding to move to Changsha and rename themselves Changsha Ginde. He would get his wish when he joined Chengdu Blades on the final day of the transfer deadline and would play in twenty four league games in their successful promotion push to the Chinese Super League.
Chengdu Blades would however struggle in the top tier and after a heavy 4-1 defeat to Shanghai Shenhua, Song as well several other first team players would be dropped from the team After some consistent performances for his club Song Zhenyu would be called up to the Chinese senior team in 2007 after recently appointed manager Vladimir Petrović decided he was looking for a new goalkeeper.
He would fight for the goalkeeping position against Zong Lei and would eventually make his first full international cap for China against Mexico on April 16, 2008 in a 1-0 defeat.
Under Petrović"s reign Song would become his countries first choice goalkeeper until Gao Hongbo became the Chinese new manager and decided to drop Song from the squad.