Judging from the scope of protection, foreign patents are not protected in China.
From another perspective, one of the conditions of patent authorization is "novelty". At present, the novelty stipulated in China's patent law is absolute novelty, that is, before the patent application date, any disclosure will affect the novelty of patent application.
If a technology is patented abroad and has been published on the corresponding official website of that country, the publicity will affect the novelty of all patents applied in China after the publication date.
To put it more bluntly, you can use the patented technology published abroad for free in China, but you can't get the patent right of the same technology. You can improve your technology and apply for a patent in China!