I think that eventually, China will start being pro-immigration for all kinds of best highly educated graduated engineers or scientists from abroad once it maximizes its own potential first, maximizing the gross enrollment ratio for higher education (and secondary education enrolment ratio on the step below that slightly as well) to the level of developed countries. At that time it will probably be rich enough to attract those kinds of individuals from around the world even more. They will probably start accepting more international students as well and easing long-term retention rates for the brightest ones as well.
The reward of doing this outweighs the potential risks associated with allowing more foreigners in regard to national cohesion, not to mention that this is a very small and selective number of people that can't affect anything in any major way (easily controllable population). I don't know when the overall enrollment rates will hit that of developed countries, but once that happens, this policy will probably start, maybe 10-20 years from now. Also, it's important to note here that even with lower tertiary enrollment rates, China already has higher ratios of STEM graduates amongst all graduates, which are many times more valuable than some of the useless jobs in the West for the future world.
However, this is not nearly enough to cover the total demographic and potential consumption losses caused by declining birth rates. And I don't think that China will ever allow for mass immigration of lower-skilled workers, or non-workers at all like the US and EU allow (this mass-immigration of lower quality population is the major reason why for example EU and US have higher TFR than Japan and South Korea and China in my opinion). Accepting only the brightest people can't be a substitute for total demographic internal losses, and for this, I think that it will have to be included 20-30 years in the future semi-mandatory having more children in China. The Chinese government is the one government with the highest chance to pull this off successfully, not to mention the technology and cultural level at that time in the future. There would probably be already technology for artificial wombs and widespread societal mindset changes.
As to why China is fine without doing something this major for at least another 20-30 years, it's because China would also grow automatically in other ways to at least 3-4 times the current real GDP (PPP). They will not only get more graduates every year internally, but their current scientists will also gradually get more efficient and experienced because they are quite young in comparison to developed countries both literally and collectively, hence their individual H-Index scores will also rise (they will also probably get paid more and more raising an overall motivation for every individual scientist in the future).
As the Chinese economy continues to grow at least 5%, this means more total R&D spending for science and technology, better retention rates for their scientists, more infrastructure improvements for science and technology, totally new sci-tech zones, etc. All this will lead to more production in the economy on an average citizen-type basis. So, until all of this is pretty much exhausted, like in Japan, raising average GDP per capita 3X, there is no point in worrying about demographics in China. That is not the biggest priority currently, I think there are way bigger priorities for now.
Just to add, China already as it stands beats the US in every kind of education, science, technology, and related metrics, and I could even argue that is on the level of the entire Collective West combined. So just because it can grow 3-4 times more in the future, it doesn't mean that it isn't already above the West right now, meaning that it should keep a low profile due to that tremendous future potential. That is probably also why the West panics so much.
Chinese schoolkids are already better than the West and are leading the world in standardized international PISA scores, and subject ratings, their students have more total knowledge on average, learn more advanced topics earlier, lead in Olympiads for natural sciences, are more STEM-inclined, have higher IQ scores, spatial awareness, and processing power, higher literacy rates than in the US. Also regarding education, China has the best natural sciences universities in the world and most of them are in the highest category (also in computer science and engineering).
They have the total number of top universities on the level of the entire West combined if we look at practical metrics like their high-quality research output. In the area of science, they also have the most highly-citied top prestigious scientific papers published in natural sciences and emerging and critical technologies, the most 'hot papers', they have the WIPO patents yearly on the level of the entire West combined if not more, they probably have the highest total R&D spending right now (in terms of purchasing parity), in the Nature rankings, they are also ranked the best in terms of research institutions, cities, etc. They lead the world in high-tech exports and have better total high-tech localization rates than the West, and all those advantages I listed are still increasing. Some people see Chinese potential for growth 3-4 times but don't see what China already accomplished, China individually is already on the power level of the entire West combined in my opinion (already far above US).
The reward of doing this outweighs the potential risks associated with allowing more foreigners in regard to national cohesion, not to mention that this is a very small and selective number of people that can't affect anything in any major way (easily controllable population). I don't know when the overall enrollment rates will hit that of developed countries, but once that happens, this policy will probably start, maybe 10-20 years from now. Also, it's important to note here that even with lower tertiary enrollment rates, China already has higher ratios of STEM graduates amongst all graduates, which are many times more valuable than some of the useless jobs in the West for the future world.
However, this is not nearly enough to cover the total demographic and potential consumption losses caused by declining birth rates. And I don't think that China will ever allow for mass immigration of lower-skilled workers, or non-workers at all like the US and EU allow (this mass-immigration of lower quality population is the major reason why for example EU and US have higher TFR than Japan and South Korea and China in my opinion). Accepting only the brightest people can't be a substitute for total demographic internal losses, and for this, I think that it will have to be included 20-30 years in the future semi-mandatory having more children in China. The Chinese government is the one government with the highest chance to pull this off successfully, not to mention the technology and cultural level at that time in the future. There would probably be already technology for artificial wombs and widespread societal mindset changes.
As to why China is fine without doing something this major for at least another 20-30 years, it's because China would also grow automatically in other ways to at least 3-4 times the current real GDP (PPP). They will not only get more graduates every year internally, but their current scientists will also gradually get more efficient and experienced because they are quite young in comparison to developed countries both literally and collectively, hence their individual H-Index scores will also rise (they will also probably get paid more and more raising an overall motivation for every individual scientist in the future).
As the Chinese economy continues to grow at least 5%, this means more total R&D spending for science and technology, better retention rates for their scientists, more infrastructure improvements for science and technology, totally new sci-tech zones, etc. All this will lead to more production in the economy on an average citizen-type basis. So, until all of this is pretty much exhausted, like in Japan, raising average GDP per capita 3X, there is no point in worrying about demographics in China. That is not the biggest priority currently, I think there are way bigger priorities for now.
Just to add, China already as it stands beats the US in every kind of education, science, technology, and related metrics, and I could even argue that is on the level of the entire Collective West combined. So just because it can grow 3-4 times more in the future, it doesn't mean that it isn't already above the West right now, meaning that it should keep a low profile due to that tremendous future potential. That is probably also why the West panics so much.
Chinese schoolkids are already better than the West and are leading the world in standardized international PISA scores, and subject ratings, their students have more total knowledge on average, learn more advanced topics earlier, lead in Olympiads for natural sciences, are more STEM-inclined, have higher IQ scores, spatial awareness, and processing power, higher literacy rates than in the US. Also regarding education, China has the best natural sciences universities in the world and most of them are in the highest category (also in computer science and engineering).
They have the total number of top universities on the level of the entire West combined if we look at practical metrics like their high-quality research output. In the area of science, they also have the most highly-citied top prestigious scientific papers published in natural sciences and emerging and critical technologies, the most 'hot papers', they have the WIPO patents yearly on the level of the entire West combined if not more, they probably have the highest total R&D spending right now (in terms of purchasing parity), in the Nature rankings, they are also ranked the best in terms of research institutions, cities, etc. They lead the world in high-tech exports and have better total high-tech localization rates than the West, and all those advantages I listed are still increasing. Some people see Chinese potential for growth 3-4 times but don't see what China already accomplished, China individually is already on the power level of the entire West combined in my opinion (already far above US).