As far as I know, the government may have tried, but the scientists themselves were not down with it.
This sort of culture of the openness of science is why the Chinese government distrusts scientists inherently. And also why Shi Zhengli has maintained an extremely consistent story with the pandemic despite the government's changing its story like 3 times. Also why they've since silenced her. They don't trust their own citizens, and definitely not their own scientists.
It's common knowledge that the CCP tried to cover up the SARS outbreak initially, and then later changed course. Just like they tried to fly under the radar with covid-19, the WHO changed the timeline last year admitting China never informed them. Then China tried to silence anyone who spoke out about it. It makes you wonder what would have happened if Taiwan never requested information from the WHO, effectively informing the WHO to begin with.
