“Our military has broadcast warnings, deployed combat air patrol and naval vessels and activated land-based missile systems in response to the situation,” said the ministry.
China has not yet issued any statements on the purpose of the military drills on Saturday.
The Chinese Communist Party views Taiwan as its territory, despite never having controlled it, and has long vowed to “reunify” the island with the Chinese mainland — by force if necessary.
But the full ramifications of her visit are only now emerging, with China halting cooperation on various issues, worsening already strained US-China ties, and ramping up exercises in the skies and waters around Taiwan.
On Friday, 68 Chinese warplanes were reported in the Taiwan Strait, according to Taiwan’s Defense Ministry.
Of those, 49 entered Taiwan’s air defense identification zone — a buffer of airspace commonly referred to as an ADIZ.
That was just a few planes short of the record set last year when 56 Chinese warplanes entered the ADIZ on the same day.
Nineteen of the warplanes on Friday also crossed the median line dividing the Taiwan Strait, the ministry said.
That was the first time China had sent missiles over the island.
Also on Thursday, two Chinese drones flew near Japan’s Okinawa prefecture, prompting Japan’s Air Self-Defense Force to scramble fighter jets in response.
The drills are scheduled to last until Sunday local time in Beijing, according to Chinese state media.
Japan and other G7 economies have urged China to halt its exercises in the strait and maintain the status quo in the region.
Beijing responded by lashing out diplomatically, cancelling future phone calls between Chinese and US defense leaders, annual naval meetings between the two countries, and planned meetings between Chinese and Japanese officials.
China’s Foreign Ministry announced a raft of countermeasures against the US on Friday, including sanctions against Pelosi and her immediate family.
China also suspended bilateral climate talks; cooperation on the repatriation of illegal immigrants, transnational crimes and drug operations; and legal assistance on criminal matters.
John Kirby, the communications coordinator at the National Security Council, said not all communication had been halted between the US and China, and that certain channels between senior leaders remained open — but added that the suspensions were still an “irresponsible act.”