Given the number of times the Chinese government has been shown to lie and actively try to hide dissenting people/information when it tells a story they don't want told... I think it's fair to start from a point of distrust. Sure, it doesn't mean they're lying about the numbers here, but they started out this whole thing by lying about it, by throwing someone (a doctor?) that did speak out in jail.
My apologies, I was mis-remembering. Dr. Li Wenliang was arrested, questioned, and officially reprimanded for warning about the Corona virus outbreak. Looking now, I don't see that he was actually thrown in jail.
That being said, it does still speak to the point of the Chinese government and their attempts to control the narrative. At least for me, that makes me start from a point of distrust over anything they say.