This is mostly irrelevant to AI development what you should be looking at are STEM phds, particularly in CS, electrical and computer engineering and Math

Lets see how these numbers stack up

Annual PHDS

CS: US = 2300 China = 5500 ECE: US = 2400 China = 7500 Math: US = 2200 China = 4500

Now of the US PHDS what percentage of the PHD's are awarded to students from China?

CS: 32% ECE: 35% Math: 26%