President Xi Jinping warned his American counterpart, Joe Biden, in a phone call on Thursday against “external interference” in Beijing’s relations with the island.
China says Taiwan has no right to conduct foreign relations. He sees visits from US officials as encouragement for the island to formalize its decades-old de facto independence.
The Department of Defense warned Washington this week not to allow Pelosi, who is on par with Biden as head of one of the three branches of government, to travel to Taiwan. A spokesman said the PLA would take unspecified “strong measures” to stop pro-independence activities.
The PLA has flown increasing numbers of fighter jets and bombers near Taiwan and has in the past fired missiles at shipping lanes towards the island.
Taiwan and China separated in 1949 after a civil war that ended in a communist victory on the mainland.
The two governments say they are one country but disagree on who gets the national leadership. They have no official relations but are linked by billions of dollars in trade and investment.