A lot of people attack US for banning the chip sale to China, but the reality is that the ban is two way. Not only US bans advanced chips, China also severely limits US chips in the hopes that it can spur the homegrown ones. In fact, the first sentence says it much

  Chinese artificial intelligence startup DeepSeek has relied on Nvidia Corp. chips that are banned in the country

https://www.reuters.com/world/china/nvidia-shares-gain-trump...

https://www.reuters.com/world/china/china-bans-foreign-ai-ch...