But those were one-time breaches related to patchable software flaws, and nobody knew for sure if a national-backed entity did it (maybe except Stuxnet https://

But those were one-time breaches related to patchable software flaws, and nobody knew for sure if a national-backed entity did it (maybe except Stuxnet https://en.wikipedia.org/wiki/Stuxnet https://en.wikipedia.org/wiki/Stuxnet). They were not hardware and not directly linked to the Chinese government.