That lesson for China from the 1962 skirmish, is that giving Indian a bloody nose does not work.As they clean themselves up to come back for more skirmishes, or keep doing their wicked tricks, for the last 50 years.
There can only be three outcomes from this situation.
1. a negotiated withdrawal and deescalation
2. another China gives India a bloody nose
3. China goes into full war mode settling all disputed areas
Lets say for argumentative reasons, China comes out ahead in each of the three possibilities.
The worst outcome would be number 2.
So if there is a war, have to expect a big war, or the masses have that expectation of a big war.