No, you misunderstood me. The goal is denuclearization of NK. Accomplishing this task peacefully is preferred, but if war against NK is necessary to achieve this task, then so be it. China will not rush in to defend NK against the US/SK UNLESS NK is willing to be a good pawn, which includes denuclearizing. If they're not, then China will rush in to conquer NK in order to assure itself a favorable post-war order.
The sky may rain but NK doesn't have to nuclearize.
If the core of your assessment is the highlighted texts, then I did not misunderstand you. Those are what I disagreed with you and rightly understood you, because I believe that is what China's opponent want China to do for them "借刀杀人".
Neither do I agree with a conquest in 21st century. If China's desperate acquiring nuclear weapon against US and Soviet nuclear blackmail is justified (rightly so in my perspective), then I can not agree with China invading a country for that purpose, especially for China's opponent, that is "替他人作嫁衣裳". China should not be another USA in the 21st century, no country should ever.
In my recounting of the phrase from Mao, I meant "China's possible war against SK/US" by "so be it", not "nuclearized(or not) NK".
I think we have made both of ourselves crystall clear of where we stand by this stage, so I leave the difference to be.