Tell us NOTHING.
Here is what you do not understand about warfare because you neither have served nor made any serious study about the subject. And I can tell.
Warfare is the only human activity that cannot regress, meaning you cannot reuse old ideas and technology. You can modify old ideas with new technology to create new strategies and tactics, but you cannot recycle what was successful in the past and expect it to work. Of all human activities, warfare is the most technologically dependent of all.
What this really means is that in order to at least prepare for the next war, you should study the most immediately previous one. It does not matter who were in that war and where. You should study that war to see if the participants made any progress in the efficiency of executing the many aspects of war, from individual kills to innovations in tactics to command decisions and many more. If that war contributed no changes to warfare, then you proceed to study the next prior one. And so on if necessary.
This is why it is hilarious to me -- a Desert Storm veteran -- that so many of you Chinese are so focused on the Korean War. In the Vietnam War, China contributed nearly nothing to warfare and it was the Viets whose battlefield tactics and political acumen contributed to how a war could be fought. Then came later conflicts in other parts of the world where technology and political considerations altered how battles are fought and even how individual soldiers are allowed to behave. China is nowhere to be found.
So when it comes to a potential war between states whose individual status is at least being regional powers, I consistently point out Desert Storm as currently THE war to dissect and learn its lessons. But you go on looking at the Korean War and I hope the entire PLA leadership is as shortsighted as you are.