I do not know exactly what they (China) planned from the start, but seeing from the quick handling they have done on Covid-19 patients has proven that they are the country that is most ready to deal with the Covid-19 virus. it's likely they had predicted this outbreak first..
I'm actually starting to believe this conspiracy theory and it seems like they have a cure for this virus already. Lots of countries have been battling against the virus but China has surpassed it in just a short period of time which is really questionable unless they're just hiding the truth from us. The best thing that we can do for now is to stay home so we'll never get infected and through that, we could contribute something so we could all go back to our normal lives.