A key difference with middle income countries that only earn export income as manufacturing base is that there are quite a few Chinese companies that possess its own technology and brands. DJI, Oppo, Xiaomi are some examples. Many of these brands are not well known in the US but have become increasingly competitive with global brands, at least in some respect, in Asia and perhaps elsewhere.
It might make sense to compare them to Korean brands a while back, with an additional advantage of massive domestic market.
Their forward-looking focus on major industries of tomorrow like AI, EV, and biotech does not hurt either.
https://en.wikipedia.org/wiki/List_of_countries_by_research_...
https://news.ycombinator.com/item?id=21868570
https://news.ycombinator.com/item?id=21692002
Since there are many areas in China that could be further developed, the service sector will also likely grow.
My point is that the US ought not get complacent and believe in wishful thinking that competition from China will simply go away in time.
Their highly leveraged economy will not survive at "6%" growth over the next decade. It is not clear that they will escape the Middle Income Trap [1]. They are struggling with zombie companies and transitioning from manufacturing to a services-based economy. Their manufacturing is also being slowly eaten away by countries like Vietnam.
As the PRC maintains its legitimacy through the economic growth that has happened under its existence, a recession could trigger political upheaval or force the CCP to distract the populace, e.g. they might try to annex the ROC (Taiwan and its other holdings) by force. A military conflict in which a large number of one child families lose their sole child would have disastrous ramifications as far as government stability, too.
[1] https://en.wikipedia.org/wiki/Middle_income_trap
(No opinion on Saudi as I only follow the economy/demographics of the PRC and Eurozone countries)