広州軍区
In April 2006, Su was promoted to commander of the North Sea Fleet, and concurrently deputy commander of the Jinan Military Region. In 2007, he was awarded the rank of vice-admiral, and elected as an alternate member of the 17th Central Committee of the Communist Party of China. In December 2007 Su was transferred to the South Sea Fleet, serving as its commander and concurrently deputy commander of the Guangzhou Military Region.