A 2 front war will turn nuclear especially for Paxtan.
The armed forces upgradation / modernization & theater ization program of the Chinese armed forces will be completed by 2027-28 as per schedule. So far there's nothing to indicate they're behind schedule.
Hence any action against any actor by China in its neighbourhood will be after 2028. Add a bit of buffer to it & we're looking at either 2029 or likely 2030.
I'm of the opinion the Chinese will start out against India before moving on to Taiwan. I don't expect Paxtan to be around then , going by the events of the last 1 year in Paxtan especially its internal security , its economy & deep political unrest among other equally critical issues it faces.
This is incorrect assessment of the Chinese. The chinese will NOT attack India, unless one or both of these conditions are met:
1. It wishes to come to Pakistan's aid in a direct military loss to India of 1971 proportions
2. It is reasonably certain it can deliver a 1963-esque victory and capture a sizeable chunk of land it claims from india- most preferrable in Arunachal Pradesh.
Just like how India perceives Pakistan, China percieves India and in the Chinese info-sphere and Chinese culture-sphere, anything less than the above two will be seen as a misadventure/pointless and even a loss in worst case scenario - because even if Chinese inflict air casualties on us, they wont go unscathed and unless they can hold ground or they have zero reasons to go into a missile-lobbing fest with india and blow up its bases ala Pakistan style, on its own, to 'teach india a lesson'.
Chinese nationalism is very land-oriented, i shall remind u Mao 'taught India a lesson' by gobbling 50,000 sq km of our land. Xi would have to enter that ball park and eat at least half that number in some significant population areas for China to consider this a venture worth taking on its own.
Our China angle is not overly complicated - its to play to our strengths and plug our weaknesses, where our strength is far more extensive montane combat experience and training in montane combat, while our weakness is defence and logistics infrastructure near the border.
if our army has enough capability to contain China to a doklam/galwan like situation, China will not escalate beyond that, especially given India has means to hurt China economically, given China runs huge trade surpluses with India and while net trade with India doesnt enter Chinese top 10 trade partners, their +ve score in export-import category, ie, where they EARN their cash, India is #2 singular nation, after the US.
A sudden war-time scenario will almost certainly see that trade surplus cash evaporate and put further stress on Chinese economy - China will only risk this if one of the two above conditions are met.
aerospace revealed some information to news media about 
Who knows how far DRDO already has gotten.
