Where does the junction of India and China belong?

India shares borders with China's Tibet Autonomous Region and Xinjiang Uygur Autonomous Region.

The vast majority of the border area between China and India is in Tibet, with a small portion in Xinjiang. The border between the two countries starts from the Karakoram Pass in the west, and the territory is bordered by Bangladesh, Nepal, Bhutan and China in the northeast, Myanmar in the east, Sri Lanka across the sea in the southeast and Pakistan in the northwest. It is bordered by the Bay of Bengal in the east and the Arabian Sea in the west, with a coastline of 5,560 kilometers.

Expanded:

The dispute over the eastern section of the Sino-Indian border is a traditional customary line versus the McMahon Line The traditional customary line is in the southern foothills of the Himalayas, which serves as the border, and about 90,000 square kilometers of southern Tibet belongs to China, while the McMahon Line uses the line connecting the watersheds of the Himalayan ridges as the boundary line, which assigns the land in southern Tibet to India.

The western border dispute is mainly over the ownership of the Aksai Chin region in Xinjiang. Aksai Chin, a basin surrounded by the Karakoram Mountains, the Kunlun Mountains and the Ali Plateau, has been an important route from Xinjiang to Tibet since ancient times, and has always belonged to China until the Indians protested against China's construction of the New Tibet Highway through Aksai Chin in the 1950s, when the Chinese government was unaware of India's territorial claims to the area.