What has China got to hide?

It is a question a lot of people are asking right now. Why doesn't China want an investigation into the origin of the Covid19 virus? The Ambassador here in Downunder has warned of "economic" consequences if we persist in supporting the push for an inquiry and for even seeking an answer.
I don't know the answer of course. If I did then there would be no need for an inquiry - but there is a need for an inquiry. There is a need for answers - so that, if possible, nothing like this happens again.
The economic impact of this pandemic is going to be felt for generations to come. It is going to change the way we live and interact with other people. 
Chinese officials claim that, even with their massive population, they are almost free of infections and that it is "business as usual" there. Even in the unlikely event this is true then they have to realise it is not the same for the rest of the world. 
In this state we have had no new infections reported for five days now but that does not mean we are out of danger. We aren't. We are actually at the worst possible time. People are likely to get careless. They are tired of the rules about social distancing. They want to get out and see their friends. They want life to go back to "normal", to be like it has always been.That is not going to happen. What is more we are going into winter and it is even more important to keep those social distancing measures in place. It is even more important to be vaccinated against the flu this year...and yes, I have been. The Senior Cat and Middle Cat have had their shots too. As far as possible we are staying at home, away from other people. It isn't nice but it can be done. The Senior Cat has talked to my godfather and other people on the phone. ("It isn't the same as seeing them but it is better than not even hearing from them.")
We can do all of that and much more but it does not let China off the hook. If they have nothing to hide then an inquiry will benefit them as much as it benefits the rest of the world. The idea that China can impose economic consequences in order to silence us - or any other country - is wrong. If there is wrong doing then people must be held to account.