A look into history and you'll see that every virus has a fairly predictable pattern: A slow start, exponential growth and a dying off period (for the virus). Several things can change how the pattern looks. In some cases (e.g., Ebola 2014), the virus is so lethal that it doesn't get the chance to spread very far (i.e., the infected die too quickly).
So, left to itself, you should expect things to get better in the same manner that they got worse. In other words, China had it first, so they should be the first to get better, and so on. For simplicity's sake, I'm intentionally ignoring reinfection either from other areas of the world getting back into China (to hit those that missed it the first time) or, a much bigger danger, that the virus will mutate which basically needs to be treated like a completely new outbreak.
My confidence of what China's reporting is accuracy is extremely low.