Hopefully, nothing will happen militarily. She's landed, so she accomplished what she wanted to do. The Chinese don't like losing face. The U.S. is extremely dependent upon Chinese manufactured medical supplies, and many kinds of electronics equipment. I can envision them halting shipment of those types of goods. They could also embargo Taiwan, which would bring their economy to a halt. I do give Pelosi credit for having the fortitude to carry through on her visit. However, she may cause would wide problems, with unforeseen repercussions. The Chinese hold grudges for centuries, so this isn't over by a long shot.