Xi is the president of China not the world, he has no obligation to care about what happens to the world , just as how it is America first it is also China first.
he (or more accuratly the entirety of China) acted swiftly and eleminated Covid in China while most government’s outside China are screwing their own countries with crappy policies, they do a poorly enforced lockdown for two weeks then they open up partialy or fully for one or two weeks and the cycle continues. the Pandemic would have been over a long time ago if every single president in the world was even half as competent as Xi.