How can China match USA at PhD level education?

Many talented Chinese people, the creamiest of the cream from tier 1 cities and universities, immigrate to US. And this is why:

https://preview.redd.it/eqf3nax1lcie1.jpg?width=1063&format=pjpg&auto=webp&s=0dcf0b60c4cb5fad56fce7741a33196d50127242

So what should china do to level up and ultimately take over USA in PhD education research? By grassroot reforms in education or by a complete overhaul of education system or by investing more to attract bright minds from around the world to china?