Nope.
China population is still increasing, albeit at a slower rate. And China's population is a massive 1.41 Billion.
From the BBC:
China census: Data shows slowest population growth in decades
https://www.bbc.co.uk/news/world-asia-china-57067180
And they don't even have immigrants. Ameica’s population would be down if not for massive immigration.
Their working age has already peaked and the us has higher domestic birth rate than China. Wait till us outflows start in China the next 5 years with Europe a couple years behind. And no one, not even Chinese, trust storing their wealth in China.