On December 22 , 2011 , Mao was placed under investigation .
On December 22 , 2011 , Mao was entered Shuanggui proceedings , and was removed from his post as party chief of Wuxi .
On December 22 , 2011 , Mao was placed under investigation and entered Shuanggui proceedings , and was removed from his post as party chief of Wuxi .