BEIJING -- The Central Military Commission has decided to reorganize the Army of the People's Liberation Army (PLA), Defense Ministry spokesperson Yang Yujun said Thursday.

Yang said that 13 army groups will be formed from the previous 18.

The move is a crucial step to build a strong and modernized new-type army and is important to shifting the focus of the PLA from quantity to quality and efficiency, he said.

In response to a question on reform of military academies and research institutions, Yang said that the reform aims to adapt to the new command system and military structure, as well as to provide talent and theoretical and technological support to the building of a first-class military force.

The reform is now underway, he added.