In 2019, there were about 150 million outbound tourists from China (and I think this means mainland China, specifically, but I don't know if multiple trips by the same person count multiple times).[0]

That's up from 100 million in 2013, so the number was rapidly increasing before the pandemic (and it will probably begin rapidly increasing again).

Regardless, the point stands that at the moment, there's no mass rush to escape China. Most people in China think life is getting better year for year, and are fairly optimistic about the future of the country. It's not a democracy, but it's not the dystopia it's caricatured as in Western media.

0. https://www.statista.com/statistics/1068495/china-number-of-...