An armed conflict between India and China is unlikely and I'll give you 3 reasons for it:
1. The "disagreements" between the two countries have existed for a long time (like about certain areas between the two countries and borders, etc.) and it has never led to any major conflicts. In other words India has a much higher chance of going to war with Pakistan than with China.
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Dear if India starts a war with Pakistan what do you think what will happen? If this happens china will probably be involved in this war from the side of Pakistan. Pakistan has a strong relationship with China and China has invested a lot of money in Pakistan. their biggest Project in Pakistan Is "CPEC" If this project successfully completed both countries will have a lot of advantages of it. China Shipping Costs will be reduced because of this project they will not have to travel a big giant sea for their importing their country needs CPEC will help them all that way to reduce that cost.
Some Days ago, I was listening to a piece of news that mentioned that now these days India is bothering the project and does not want the completion of this project. Actually, the thing is that we Pakistan and Indian people like each other and respect each other as well but the negative thing is that the border army, government, and social media play their bad role in spreading negativity to increase the conflicts between these two countries (Pakistan & India)
That's true. I was just trying to compare the nature of tensions between these duos.
As for China, from what I've seen they've always strived to prevent any kind of conflict specially in countries close to them or in countries they have a major interest in. This means they will continue trying to both avoid and prevent armed conflicts between China and India or India and Pakistan. After all they need stability to expand their economy.
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The tension between the Pakistan and India Border is kinda tight because these both always have been making problems on different things for each other over time. these problems are geographically as of Kashmir India says it is their part of the land and Pakistan says it is our part of the land but between these two countries Kashmir has smashed but the Indian army is kinda bad with Kashmir people residential as we have heard so many news over this now it is true or not who knows?
On the other hand, another problem between these two countries is the water conflict which always has remained unsolved till the day these two countries became independent. The Ravi River comes from India to Lahore city of Pakistan Which stays mostly time empty the whole year and when the Water at the side of the Indian river gets overloaded they release water which in results sometimes Pakistan people who live at the edges of the Ravi River have to face some loses but it would be the best thing that if India does not disturb the water flow like that it should always be released and all things will stay naturally good.
The main thing is humanity that is why I always respect all humanity no matter whether they cross of the border or not i know both sides of people have some negative energy just because of the negative impact of social news channels otherwise both respect each other.