Preliminary negotiations in advance of Trump's visit (now delayed) went smoothly. Needless to say the US team, esp. Bessent, have plenty on their plates already dealing with the economic fallout of Hormuz. So all the Chinese team has to do is sound somewhat reasonable, and let them rush through the motions before running off to piss on Trump's latest fire. Sure, China is important. But Iran is important
and urgent, so it gets all the attention and focus. That's exactly how the important but non-urgent details get overlooked, and how the leverage slowly but steadily accumulates on the non-US side of the table.
This is the actual non-meme version of doing nothing and winning. Always ensure you're the second-biggest problem in the room, not the first, and by the time they remember you're there it's far too late.