I think China now has a well developed standard for building up tensions between other countries like the others have said, it could be a negotiation tactic or something if India are showing similar tensions. I also don't think Indias army is anywhere close to the strength of China (but I might be wrong on this as I haven't studied the two). There may already be tensions due to china's cover-up of the virus and a lot of people seem to think they weren't badly affected by it which could be a stance a lot of governments take (even though a lot of sources have proven China took quite a hit to its economy and population).
I think the reason that there is a tension between these two nuclear nation is that China is paving a new Silk Road, it is called Belt Road Initiative and I think that India will be in the path so they have to negotiate terms with these nuclear nation without escalating a possible war, I do not say that it is the objective truth but I think that China's project to reach out the world through trade is very ambitious and promising at the same time. The economic stability of a country does not shake that much when there is a tension but I think it will show its cracks sooner or later.