>>102472
>it's just that the Chinese have little interest in the outside world by now.
They never did. This is normal. The Middle Kingdom has always looked inward, not outward, as a result of being hemmed in on all sides by Mongols, the sea, and all-but-uncrossable deserts and mountains. Western nations look outward. The CCP's utopia is one in which the cities on China's coastline swell to bursting with genetically engineered bugmen who are content to live in concrete pens and slave their entire lives away for the greater glory of the CCP, then die without making a fuss, none ever so much as looking up at the stars.
Even Russia, which is very much not a Western nation, has had the cultural phenomenon of the frontier, sorta, for some values of "frontier." Since the last of the Mongol and Turkish princedoms were conquered and their inhabitants expelled about three hundred years back, Russia has had millions of square miles of arable land that are as utterly desolate of human life as they were during the Miocene. For the last few centuries a handful of hardy souls have tried to go innawoods to homestead, and get out from under the watchful eyes of the Tsar and his agents without the risks of emigration. There's a sect of Russian Orthodox Christianity whose name for themselves, староверы, translates into English best as "Old Believers" or maybe "Old Ritualists." Periodically a mania for this idea spreads among them. They don't congregate, though. They don't build towns, which would inevitably come to the attention of the Okhrana, or the Chekha, or the KGB, or the FSB. Single families go out without so much as a radio. They build tiny cabins, often elaborately camouflaged to make them difficult to see from the air, and grow potatoes and cabbage in between the trees for a few years, until they get eaten by bears, or freeze to death, or starve to death, or one of the kids dies of appendicitis and the parents decide to move back to the city.
This is a tiny, tiny movement. At any given time probably fewer than a thousand of them are living innawoods in Siberia. Russia's military has historically built bases deep innawoods, and the secret police's death camps are always put at the terminus of a train line that brings zeks in but never out. Other than this there are fewer than ten million souls in Russia east of the Urals, the single largest concentration in the Jewish Autonomous Oblast, and this is according to official figures, which are known to be unreliable and frequently turn out to be wildly exaggerated.
If you opened a magical portal to such land from the US, you'd instantly get a gorillion volunteers crossing over, building farms, building towns, panning for gold, building mines, building sawmills to export lumber back to this side. In Russia almost no one is interested. Part of this is because everyone knows that they wouldn't have paved streets before the secret police and the army showed up and started cattle-prodding all the postpubescent males onto buses with one-way tickets for the zero line in Donbas. But no one wanted the free land before the current war, either. It is not a coincidence that the only places on Earth where you can follow a waterway to the sea without ever finding a town, a port, a bridge, or any other sign of human develoopment, are Africa, India, and Russia.