You guys are gonna drive me crazy. 7nm was found in a commercially produced chip. Unless you believe for a moment that something that is commercially produced is the farthest a country can get, and there's no such thing as R&D and there's no lab work before commercial viability, then you already know they're beyond 7nm.
https://www.reddit.com/r/GlobalPowers/comments/my1c6d
In 2019, China already created a EUV lithography machine that could produce chips. But it was never commercially viable. They're still working on it. I don't know if it will become commercially viable, but again, they were able to produce chips with it. China is farther than 7nm for sure. The problem again is it's not commercially viable at this point.
Let's just use SMEE as an example. They've been working on their SA800 for about 10 years now. Do you really think in all this time it's never printed a chip? Of course it has, probably many many chips. The problem is it wasn't efficient enough to be commercially viable. It's getting to that point now, and that's exciting, but we have to understand, it's existence and ability to produce chips came way before it's mass production.