It's good that you point that out. Because it shows US really can't sanction China and only entities within it like it does to its own allies as opposed to straight country sanctions like Iran and North Korea.

https://www.tradecompliance.pitt.edu/embargoed-and-sanctioned-countries

Here's a list.

In fairness though, that list also shows the US can't sanction Russia either. So not sure how much of a flex not being able to sanction China is.