Yes, trade is the best stuff to avoid war between China and India. The deficit is created by the different development of stage between two nations, it would be solved by negotiation or India's value chain upgrading. India is so far the biggest beneficiary of AIIB, and the two biggest shareholder of AIIB are China & India... there are lots of everything to cooperate. I personal think China would study India how to deal with his internal Muslim issue. Just right of Modi been called "Gujarat Slaughter", the western nations banned Modi's visa, Chinese government invited him to Wuhan as first time, i think it' was not a coincidence.