Sorry but the Biden and Xi meeting is about pomp and ceremony that Chinese value even if people believe nothing will come out of it. I'll bring my own gripe that people here long enough know I've mentioned where Beijing essentially begged to be a part of the International Space Station when they can completely make one on their own and look now. Why do the Chinese want to embarrass themselves like that? It's because they value looking like they're part of something major in the world as an example of how they're up there with the elite powers. China and other Asians care about stuff like that which is why also the petty Asian nationalists like to claim the US likes them better than the other. What does it get you? Nothing unless everyone values such nonsense. Which is why it makes it stupid.
The US does it too but it's only to make Americans thinks they're that important over everyone else. When this meeting between Biden and XI at the G20 was first announce, I heard it on the news framed as Biden accepted a meeting with Xi. It was the US that was perturbed that China as dragging its feet on a meeting and they framed it that China was waiting for the US to accept...?