Which is more difficult, emigrating overseas or settling in Beijing and Shanghai?

Immigrating overseas means that you can immigrate as long as you have money and talent. Even if it costs millions, it is not easy to settle down in Beijing and Shanghai. Now the government wants to evacuate the population of Beijing or Shanghai, and it is very troublesome to settle down. But foreign countries have always encouraged the introduction of talents, so it may be more convenient for you to immigrate.