A few months ago, I saw a YouTube video, china complained about past treaties.
Now i was checking why the west sanctions didn't topple russia, due to china buying russia oil. At much lower prices ! but still money entered russia due to oil exports.
We all know gasoline petrol exports were forbidden in Russia , for a short time, indicating ukraine success in damaging enough Russian refinery , to make real trouble, but still oil sold export to china.
Therefore if i was xi china , NOW is when i can tell russia ULTIMATUM "i can buy oil from saudi but you need me, desperate for your war budget! , so i wil lessen my oil buying unless you russia give us our land, just what was ours, historical china in east asia coast.
MAYBE JUST MING coast BUT
Maybe even manchu border. See picture below.
If russia said we need Vladivostok port, n railroad to it, i can compromise "i will let you USE , OUR port just unload train at new border, your russia ships can continue from our port" now is when russia is weak n desperate.

Why doesn't China say the land ultimatum now?
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