>>12480688China's economy is based on manufacturing, and they have huge protective tarriffs on everything except for raw materials. Raw materials imports
from their trading partners would be relatively unaffected by the pandemic. They knew that because of their authoritarian society, they were best equipped to weather a severe viral outbreak, and now this is the result.
A lot of people think their aggression is a ploy to secure access to foodstuffs and raw materials, much like Imperial Japan did in the early 20th century.