Your assertions regarding the 'dislike' of the China authorities for the NK régime are displaced - and like or dislike hardly impact geopolitics

China is stuck with the NK, as with the SK, as with the frozen war and the US bases

Régime change for NK is a fantasy

China Is obliged to best handle this situation

Which is, partly, why the military alliance is between NK and RF, while the Joint Declaration is between RF and China

You can begin to see how this works

To detach SK even somewhat from US dominion, NK is essential

And, as one has seen, in the Red Sea

To suggest that an economic and military very large scale power which has 2/3 million of a very small neighbour's countrymen on it's territory, and one which has long supported both country and régime,: one now allied to this larger country's largest partner, has no influence in NK affairs....

....Is not only absurd it is un reasonable and can only be the result of such a comprehensive misunderstanding of political affairs as to suggest.....

Well why bother to polemicise

Suffice it to say you could not be more wrong if you tried, or maybe...try harder