I think it’s pretty much inevitable that the longer a disease remains in circulation, the more variants you’ll see develop.
The approach for most of the world has been to develop vaccines that work, deploy them and then get a herd immunity. China has done pretty much the opposite. Attempting to obtain a COVID free society without a decent vaccination programme with a population density the size of China is beyond ridiculous and will lead to perpetual large-scale lockdowns. Unless China is going to completely shut down it’s borders the strategy is completely flawed