From 2020 to 2021 I would have agreed with you, but after the vaccine was out Chinese citizens mostly all got it. The remaining restrictions were absolutely unnecessary and actually ineffective.

Even now, you need to wear a mask in public transit, and just to come into the country you need to take a COVID test before your flight. You get a COVID test after touching down.

But for what? That's an unnecessary expense for the traveler since nobody does free COVID tests. My girlfriend paid $140 in the US for one, I paid $50 in Korea (it would have been $80 in the airport, but I wasn't at the airport at the time)