This will give China 'justification' for their coming attack on Taiwan. It will no longer be perceived as an unprovoked attack. Pelosi will be said to have provoked it.
Additional shenanigans: Pelosi is a lame duck as one of the oldest still alive people in government. She is very likely to retire this year. So, Pelosi has nothing to lose. She is covered. She is safe in the shadows.
Biden's controllers have made a huge hubbub about how much he supposedly opposes this trip. Ergo, Biden is covered. Biden is safe. "I told her not to do it."
The end result will be, an old, retired, and forgotten Pelosi caused a war by doing something which was ostensibly vehemently opposed by Biden. So, it's nobody's fault. The invasion simply happened by accident. It happened due to a random set of unfortunate circumstances. It's nobody's fault.
The invasion will happen very soon. And it will be played by the international media cabal as, Pelosi's fault. Thus letting China off the hook.