Book excerpt: For 20 years, the Department of Defense (DoD) has provided Congress with an annual report on military and security developments involving the People's Republic of China (PRC). These reports have assessed the contours of China's national strategy, its approach to security and military affairs, and potential changes in the PRC's armed forces over the next 20 years, among other matters. 2020 marks an important year for the People's Liberation Army (PLA) as it works to achieve important modernization milestones ahead of the Chinese Communist Party's (CCP) broader goal to transform China into a "moderately prosperous society" by the CCP's centenary in 2021. As the United States continues to respond to the growing strategic challenges posed by the PRC, 2020 offers a unique opportunity to assess both the continuity and changes that have taken place in the PRC's strategy and armed forces over the past two decades.