It's just simply not true that China covered up the existence of the virus for months.

On December 16, 2019, the first patient was admitted to a hospital. This is more or less China's first reasonable opportunity to understand that there was a new disease.

On December 31, 2019, there was an article about it in the South China Morning Post: https://www.scmp.com/news/china/politics/article/3044050/mys...

And on DW: https://www.dw.com/en/china-investigates-sars-like-virus-as-...

And in Reuters: https://www.reuters.com/article/us-china-health-pneumonia-id...

So 2 weeks from discovery to worldwide news.

From the outside looking over, I would say the US did the same. I am not from either country, but I can tell you that most of our cases came from American travelers, at the same time your president was saying there were few to no cases. That was months after the US got it's first recorded case. We got one case from Wuhan, and we got 29 from the US. I know it was not the general US opinion, and I was personally well aware of the state of things in the US from the word of other US citizens. But maybe it's good to know how the US projects out to other countries through it's ambassadors.

Or not allow outgoing international flights from Wuhan while restricting in-China travel from Wuhan.