In all honesty I feel China has a far better ability to control covid outbreaks than the US and so have loosened some of the harder restrictions whilst keeping containment of recognized outbreaks a focus (compare to the "let her rip" attitude of the west without even trying to have high enough vaccination rates or mask mandating). So again I trust China's public health officials to have a better and more realistic viewpoint on how loose they can allow restrictions to get before they risk long term damage to the populace via long covid (as they are not swimming in covid like the US still is and likely always will be).