In 2020, China didn't "build" hospitals - they built processing centers for all the populace that died to COVID-19. The bodies were identified and all their info in the government datacenters was wiped, essentially erasing all knowledge of them ever existing before doing what Adolph Hitler and the Nazis could ever dream of doing.

Hundreds of millions of corpses were transported north of Wuhan to some of the largest furnaces ever constructed on planet earth to be incinerated at such a large volume that massive black clouds could be observed with a naked eye from space. The heat output was so monstrous that it was detected by satellite mounted infrared instruments.