It's got a 79% efficacy rate. Meaning 21% of the Chinese population could become ill. No healthcare system is prepared to handle that many people all at once. This is also assuming everyone is vaccinated which is far from the case; apparently tons of old people are antivaxxers. At the height of the global pandemic, Xi Jinpig was telling his sheep that the West was facing imminent collapse and that the party's iron-handed rule would be the saviour of the Chinese nation. If he were to reverse course and import western vaccines, he may as well cut off his own weiner on state tv.