They are both huge countries and have the largest population among other countries, so maybe their conflict can cause a huge impact globally.
I don't think so that they will continue this kind of war from because they must take a declaration first and this is not the right time they must need to focus on fighting the pandemic outbreak because most of the economic status of the country is on recovering and they must need to help their own community than destroying others.
If this war becomes there are a lot of people may affect because in china they have 1,439,323,776 and in India is 1,387,297,452 people according to google and those are a huge number of people that can possibly die because of this war.
even more pathetic now is the hongkong country, almost all hongkong citizens ask for protection to china even though this is still an issue on the news. if the inauguration takes place China will become a more populous country among other countries...?