Mao spent his entire career with hometown club Shanghai Shenhua, winning the 1995 Jia-A League, 1998 Chinese FA Cup and the 1995 and 1998 editions of the Chinese FA Super Cup during his eight-year career at the club.
[citation needed] On 4 May 1997, Mao made his debut for China in a 4–1 win against Turkmenistan.
[1] Following his retirement, Mao took up an assistant coaching role with Shanghai Shenhua from 2003 to 2006, taking up an interim managerial role from January to March 2004, before Howard Wilkinson's appointment.
In July 2012, Mao returned to Shanghai Shenhua's coaching team.
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