Exactly. This makes lot of sense.The Indian borders right from the days of Lord Parshuram have the Brahmaputa river to the north. Lhasa is to the north of this river. This river belongs to us and indian armed forces must ensure that the northern bank of this river becomes our border with China. If chinese quote history for their claims, let us teach them real history.
This would be on the lines of resolute French resistance against the English during the "100 years war" where they spared no stone unturned in accomplishing their mission & succeeded, eventually. They drove the British out of mainland Europe & established English Channel as the boundary between the two distinct nations, giving two hoots about all historical & hereditary claims of the English over French land. Only after the English were contained within their islands, they set sail for colonial domination across Asia, Africa & the New Lands.
Only natural geographic boundaries (like the English Channel in Europe's case or Brahmaputra in our case) should determine the frontiers & expanse of a nation, not some artificial man-made constructs like LoC, LAC etc.
All our efforts & energy should be directed towards regaining what is meant to be ours. It is going to be a slow & treacherous journey but the journey has to be started nonetheless, while we employ all means at our disposal to accomplish our desired outcome.
However, this is all theory.
Coming to reality: None of the above is going to materialize. Indian electorate & leaders of whatever political affiliations are simply not ready for it (rather, they are not up to it).