The Chinese action followed "India's recent, illegal construction of defence facilities across the border into Chinese territory in the Galwan Valley region," a write-up in the state-run Global Times tabloid said, quoting unnamed military sources.
The aggressive posturing by the two sides came amid India's escalating border row with Nepal over construction of a strategically key road linking Lipulekh Pass with Dharchula in Uttarakhand.
Army Chief Gen MM Naravane last week said Nepal objected to the newly-inaugurated road at the behest of "someone else", in an apparent reference to a possible instigation by China on the matter. Nepal rejected the comments.