The problem is HALEU, which all SMRs depend on.

https://www.reuters.com/business/energy/americas-new-nuclear-power-industry-has-russian-problem-2022-10-20/

As for China, I have published rather absurd amounts about it. Here's my latest.

https://cleantechnica.com/2023/02/06/renewables-in-china-trend-upward-while-nuclear-trends-flat/

China only managed to put 1.2 GW of new nuclear into operation in 2023, a new low. They peaked in 2018 at 7 GW, averaged 3 GW since and now are fading even further.

https://cleantechnica.com/2023/11/06/nuclear-energy-free-market-capitalism-arent-compatible/

I would recommend you sit with this material for a while. Your challenges with confronting the reality of nuclear are clear.

https://cleantechnica.com/2022/05/06/seeing-climate-solutions-clearly-through-biases-missing-data-is-challenging/