Wont be that easy... If china wants total control of the area.. Its not India what they have to take down its Rusia and USA backed Japan what they have to face...
If china wants they have enough power to take down India even right now.. So why they are not doing it ?? Few every simple reason...
Major powers like Rusia / USA wont allow it to happen as their own importance would be in trouble....
Once again, if its regional power, then its not India what China would fear about.. Its Rusia and USA backed JAPAN what they have to deal with...
Same thing with India also... If it wants, it can go on offensive with PAK... However as its China (direct) backed (indirect USA backed also) PAK, hence India needs to seat and what