China expecting the vassals to not cave was always delusional. Trump is smart in that sense - he knows most of the world will bend the knee because they're afraid of change.
I'll go one step further - the EU will cease all trade with China before they cease all trade with the US. They are that compromised as a society (or you can think of it as a full-on white supremacy band wagon), and any Chinese illusions about the EU will be shattered, push comes to shove.
The real question to me is whether China is now willing to do the right thing, which is to increase internal consumption & fix its demographics, because in the short term, I predict there will be some hard times coming as most of the world will bend the knee to the US and try to thread the needle on China (e.g. many of them may very well cut trade with China to appease the US).
I've always been of the opinion that, at the end of the day, China must be prepared to go at it alone. Work with partners where you can, but in a zero sum world, you can't rely on anyone, especially not countries historically tied to the West.
There's only two real paths to long-term historical success: 1) demographics victory and 2) cultural / ideological victory. The US's behavior is opening up the opportunity for (2) since it is increasingly seen as a bully, but China should still invest in (1) just in case.