Despite repeated warnings from Beijing, US House Speaker Nancy Pelosi has landed in Taiwan. Her act has triggered strong reactions from Chinese netizens, raising Chinese national sentiment to a new high. Beijing has strongly condemned the visit, sent jet fighters over the Taiwan Strait and said that it would conduct live-fire exercises around the island. It has also announced economic sanctions on Taiwan, and warned of more "long-term, resolute and steadily advancing actions”. Zaobao's Beijing correspondent Yang Danxu examines the situation.