In total, China has roughly the same amount of immigrants as Ireland.
China is also objectively becoming more closed, not more open.
The amount of skilled immigrants, researchers and engineers, matters for this comparison.
Not just the total amount including random people arriving at the coast.
100% becoming more closed. I have been trying to live in China for over 15 years… I finally managed the last 3 years, but its an forever struggle/gamble each year and each year the requirements get tougher (to get a work/residence permit). But yeah.. same goes for Europe