Russia being a failed state?? They have the same GDP per capita as China and are a major immigration destination themselves with 11 million immigrants. China should actually learn how Russia is managing their migrant population.True, but let's be honest here, China is bordering some near failed states like Myanmar/Afghanistan or to a lesser extent Pakistan/Russia, it will not take much to get them to seek a better life in some tier 2 city.
It's not a competition. Who cares if America/Europe is snatching up thousands of times more immigrants then China, what is important is how many China can snatch up herself. I see it more as a bandaid until China takes however long to raise her birthrate anyway. And it's all a fixable problem. Export more culture, post ads, fund Chinese language schools in various countries, it's a problem that will take decades to solve, so better start now. All I know is that 100% China can get more immigrants than the mere thousand people that she takes in a year.
Japan/South korea are quite attractive for immigrants themselves, and while they are much richer per capita and have better quality of life, they also have the same language problem that China does and themselves don't border any countries.
If you look at duolingo stats, Chinese is the most popular language to learn in Laos and Vietnam. Extending that to the rest of SEA and the countries that they border will easily be enough for a decent population base to draw upon.
They can do all that and also take steps to try to increase immigration at the same time. Like I said before, it's better if it grows slowly over time and it's not like it needs to reach the 500k per year figure that western countries have. China is in total control here, if they see any negative effects or issues, they can immediately clamp down on the amount of immigrants or change the system whatever they like. Better then what SK is doing now, opening the floodgates only when the situation is so bad and the population is in active terminal decline.
Russia is able to attract immigrants because it borders multiple Russophone countries all with less than 3x their GDP per capita.
From that list, only Myanmar might have significant migration to China. But they are still very pro India, are part of the Thai cultural sphere, and despite Thailand being poorer there are far more in Thailand than China.
I think the profile is going to be secular, young to middle age ambitious people who like Chinese popular culture. So basically, Vietnamese, Chinese Malaysian, Laotians, then ASEAN generally, then Japanese and Koreans.