This article explores China’s war experiences in the Korean War and the Sino-Indian War and analyses China’s strategic decisions at the time of its national establishment. This article suggests that China pursued the strategic goal of protecting its frontiers and ensuring its territorial integrity in both wars, while executing dissimilar strategies. The article associates the modernisation of People’s Liberation Army after the Korean War with the outcome of the following war with India. It discusses the policy implication in terms of the ongoing security concerns over the relations between China and its eastern and western neighbours: Korea and India.