You can now begin to think they are running the world already, they know how to do it, they know when to do it and they know to take advantage of it. Of course they are prepared for it, they could have been planing it for decades just when they learned they can cripple economies by flooding the market with their cheap products. They are also buying the stocks in US, literally they own big companies in US.
Yes this scenario or thinking can be true because it is hard to think that some part of their country is not hit by the virus but of course it can also be a result of their immediate action to contain the virus in one place but if ever that the first thought is true then they are surely well prepared for it, they know how will they execute it without having unexpected damaged to their own country. Surely lots of countries economy will be shaken and will struggle to get in back to normal so while they are in this state, that country will take advantage of it like they have planned but it is only if the thought of the OP is true.