Glad your coming to your senses somewhat, but i was stumped by "India is keen on maintain a facade of friendship with China to stop any really serious Sino-Pak deal", do not even tell me you meant that? You didn't just say that?!.. India can do nothing to hinder the Sino-Pak relationship, with special mention to the military/economic deals. (Read up the military stuff and the history). Recently the Chinese signed a $45bn (approx) deal with Pakistan (economic corridor). Links below, China does not care about india's concerns. The deal went ahead. So you can carry on being delusional sir.
China commits $45.6 billion for economic corridor with Pakistan
India expresses concern over China-Pak Economic Corridor
China commits $45.6 billion for economic corridor with Pakistan
India expresses concern over China-Pak Economic Corridor
are you asking about India China deals? no, the two can make friends for little things, nothing serious by way of trade, just to maintain friendship.
China is keen on that to prevent Indo-Japan becoming too tight (example, the moment Japan announced bullet train for India, China within a week offered it at 2/3 the price). India is keen on maintain a facade of friendship with China to stop any really serious Sino-Pak deal making...and perhaps to stop a veto for UNSC.
Nobody in India or China care about border issues other than for newspaper optics