Come on ! There will be no war. Do You really think China is so stupid to wage a war only due to about 40 poor Indian soldiers sitting a few yards behind the border within Chinese territory? China would never be that stupid ... the situation in NK is different, but here China is not the main actor.
But now back to the J-20.
Well, J20 is for war, not just some novelty for us amateurs enjoyment. Or freak show for parade , trade show.
And right now, all kinds of war materials , weaponries, troops are massively being transported into Tibet 24/7, including blood plasma for potential wounded soldiers.
Based on what they saying, and doing, they are prepping for war.
Chinese analysts are saying, India right now is testing China. If China doesn't act seriously, India will step it up.