Chinese universities still can't issue student visas for international students two years later. Medical students who are enrolled at Chinese universities, for example, were kicked out in March 2020 and are still forced to learn online at 2am in their home country.
Those students would definitely go through the PU letter, quarantine rigmarole if they could. But they can't. It's clear that businesspeople are prioritized more highly, and international students are just as useless as tourists.