Xi told a military political work conference in Fujian that army is under the absolute leadership of the Communist Party of China (CPC) and the principle should always be firmly upheld.
"The Party commands the gun," Xi who is also head of the CPC Chairman of the Central Military Commission (CMC) which controls the armed forces was quoted as saying by state-run Xinhua News Agency.
"Lessons learned from Xu's case deserve a profound reflection and the unfavourable influence of the case must be thoroughly cleared away," Xi said yesterday at a military political work conference held in a former revolutionary base in the township of Gutian, Shanghang County of southeastern Fujian Province.
Xu had confessed to taking bribes, Military prosecutors announced last Tuesday.
More From This Section
Xu, who held the most influential military post, was also expelled from the ruling Communist Party of China (CPC) and discharged from military service with his rank as general revoked.
He took over as Vice Chairman of the CPC headed by former President Hu Jintao and retired along with Hu in 2013 holding the post for the longest time.
He was accused of introducing "cash for ranks" policy in promoting officers and found to have taken the advantage of his position to assist the promotion of other people, accepting huge amount of bribe personally and through his family.
The retired General along with former top security official Zhou Yongkong and various other officials were being investigated for heavy corruption and abuse of power in the anti-graft campaign launched by Xi since he took over power last year after a once-in-a-decade leadership change.
Prosecutors said investigation into the Xu's case has concluded and the filing of the case has begun, Xinhua reported today.
The retired General who is reportedly suffering from cancer has been detained along with some of this family members.
"Fighting capacity is the sole criterion for testing the troops and military officers' assessment and promotion will focus on their ability of leading soldiers to fight and win battles," Xi said, vowing to tighten the management of high-ranking and middle-level officers in the army.