The issue started early last month when the Chinese started building up militarily along the Line of Actual Control (LAC) in Eastern Ladakh and started deploying troops at multiple locations along the LAC including Finger area, Pangong Tso Lake, and the Galwan valley.
The Chinese also wanted to carry out deeper incursions into the Indian territory but they were checked because of the timely deployment of troops at the right locations by the Indian side. After the Chinese side built up at a rapid pace on the Indian front, the Indian side also rushed in troops from other locations to more than match it.