Why did China win the Sino-Indian War and lose the retreat?

(1) If China doesn't stop fighting in time, India will inevitably regroup its forces and the war will be dragged into a protracted war and a war of attrition. At that time, China did not intend to fight a protracted war, nor did it make corresponding preparations. (2) At that time, the situation at home and abroad in China was not very good. China has just experienced three years of natural disasters (1958- 196 1 year), and its national strength and people's strength are relatively weak. Abroad, China and the West (especially the United States) are still hostile. Even within the Eastern European bloc, Sino-Soviet relations have gradually broken down (as evidenced by the Soviet Union's strong bias in favour of India in the Sino-Indian War). All these make China relatively isolated internationally. (3) The operational area of the Sino-Indian War is located at high altitude, with bad weather and inconvenient transportation, which brings great difficulties to the logistics support of our army. In this case, it is not easy for our army to win, and if it is not done well enough, the battlefield situation is likely to turn from victory to defeat in an instant because of our poor supply. Once this happens, it will be even worse for China.