Previous agreements prohibit the use of firearms on the Indo-China border even if troops are carrying them. Have a look at the weapon used by the Chinese troops

Previous agreements prohibit the use of firearms on the Indo-China border even if troops are carrying them. Have a look at the weapon used by the Chinese troops to figure if the attack was premeditated. https://www.bbc.com/news/world-asia-india-53089037 https://www.bbc.com/news/world-asia-india-53089037