Vandelay
Life is absurd. Lean into it.
People don't realize how bad these demographic time bombs can destroy a country.China and Japan will have to take migrants in the next decade or so, or risk absolute economic collapse. India not so much. But a country like China will be halfed in a few generations, which will be an absolute disaster for the CCP. This is why if they don't attack Taiwan in the next year, don't expect it to happen. Their military is old, and not being replaced ed by young people. Same as factory jobs.
Japan and Korea are in the exact same positions. They sell more adult diapers than baby diapers. Pension is running out, and villages are being abandoned.
They will allow more immigrants sooner rather than later, or they will lose their positions in the world.
I think Japan will be ok, because they have 1/10 the population of China. The rate and amount of people Japan has to let in to normalize their demography can be resolved by a few years of careful, higher than normal application approvals. Probably somewhere to the order of 2-5 million working age people.
China with their population, complex infrastructure, and not many home grown natural resources probably would have to do 10 times the amount as Japan, and at least through media appear to much more xenophobic than Japan.