So why did this clown even go to China?
Becasue statecraft and diplomacy.
There's probably a lot more going on behind the scenes than what's stated publicly. Publicly, she has to say things to appeal to US voters/public that will ultimately help her boss(the Biden administration) win the next election - which means she can't appear weak on China while pushing for concepts that's ingrained in the American psyche - democracy/human rights/freedom/etc.
I'm pretty sure a lot more meaningful business is discussed behind closed doors such as various red lines for each side, US asset holdings, types of sanctions each side is willing to tolerate, de-dollarization timeline, FX and rate policies, etc.