Re: China has no choice
Why are you surprised? Even Pfizer's has little effectiveness without the booster, and many other western vaccines are even worse off.
Omicron's combination of antibody evading mutations and increased virulence make it a challenge for every vaccine. China's vaccine wasn't nearly as good as our mRNA vaccines, but that didn't make much difference until omicron arrived. If that runs wild in China beyond their ability to contain it, millions will die because their health care system will be totally overwhelmed.