Government spending on R&D in China increased by 90% to US$133 billion in the decade leading up to 2023, according to the most recent purchasing-power-adjusted data from the Organisation for Economic Co-operation and Development (OECD). By contrast, in the United States, spending rose by just 12%, to $155 billion.

I think they're not taking into account PPP. China is very likely spending more on science in PPP terms which is what really matters.