Taiwanese lobby bribed Pelosi 16 times with a total amount of more than $3 million?
Alleged launches of China's long-range rockets over the Taiwan Strait:
Called it.
Most US politicians make Bo Xilai look like a paragon of incorruptibility. For the CPC who are experienced in investigating corruption to find dirt about how Pelosi profited from this visit would likely not be difficult at all. Then, release this data to the public.
Usually, USA can fairly easily censor it, but due to the republican faction rabidly hating Pelosi, it's far from guaranteed it can be censored as the narrative starts spreading among the "underground" right wing whose platforms are owned by Pelosi-unfriendly oligarchs.
Biden might have dodged the biggest bullet by changing his tune and downplaying the visit instead of holding onto his untenable position. But China can still severely hurt Biden's control over his government by giving him 1 final parting shot.
If Pelosi is revealed to have personally profited from her trip, the US public will realize that:
1. Biden was too weak or corrupt to stop her
2. Pelosi risked American lives to defend her chasing profits and almost caused WW3
Since both are Democrats, once this narrative starts, the Republican party will fully grab ahold of it and never let US forget about the Democrat corruption and betrayal. The Chinese government itself knows it's English media is nonexistent, but they don't need to spread this propaganda themselves, they will borrow all the arrows from the Republican Party who operates the 1st or 2nd most powerful propaganda machine on the US mainland.
Of course, China doesn't actually need to release this data, just having this data means they hold Biden and the Democrats' balls in a vice. This is the sort of info you could use to make Biden bend over and even do stuff like say canceling his nuclear tests to make sure he isn't pissing you off, and much much more.
If China actually managed to get convincing proof or not remains to be seen, but it's another interesting angle of attack.
Honestly my gut feeling is that Biden is at least somewhat trapped. I don't think Ive ever seen US media change tune that fast, in a way that looked very unnatural, as if following a sudden emergency central directive. US was always exceedingly arrogant in it's dealings with all countries, even when they must cancel tariffs on China, they make sure to censor as much news as possible. The US I know would have sent Pelosi, let Pelosi negotiate arms sales, then sent the Reagan and 2 LHDs to forbid China from intruding into Taiwan self claimed territory, making a standoff like in 1996. Not meekly back away, bring her home without signing anything of use and let China seemingly do whatever they like (maybe except armed reunification).