BEIJING -- The General Political Department of the People's Liberation Army (PLA) has compiled Chinese President Xi Jinping's speeches and writings on national defense for release in the military system.

The book, compiled and released under the approval of the Central Military Commission, includes major strategic thinkings, theories and policies reflected in 36 key articles by Xi between Dec. 2012 and March 2015.

The PLA General Political Department urged soldiers and officers to study the book to improve the army, with guided sessions to explain key theories and deepen the reader's understanding.