Taiwan has reported 38 Chinese military jets flying into its air defence zone on Friday - the largest incursion by Beijing to date.
The defence ministry said the planes, including nuclear-capable bombers, entered the area in two waves.
Taiwan responded by scrambling its jets and deploying missile systems.
China sees democratic Taiwan as a breakaway province, but Taiwan sees itself as a sovereign state.
Taiwan has been complaining for more than a year about repeated missions by China's air force near the island.
"China has been wantonly engaged in military aggression, damaging regional peace," Taiwan Premier Su Tseng-chang told reporters on Saturday.
The government in Beijing - which is marking 72 years since the founding of the People's Republic of China - has so far made no public comment.
But it has previously said such flights were to protect its sovereignty and also targeted "collusion" between Taiwan and the US.
In a statement, Taiwan's defence ministry said 25 People's Liberation Army (PLA) planes entered the south-western part of the air defence identification zone (ADIZ) during daylight hours, flying near the Pratas Islands atoll.
An air defence identification zone is an area outside of a country's territory and national airspace - but where foreign aircraft are still identified, monitored, and controlled in the interest of national security.
It is self-declared and technically remains international airspace.
This was followed by a second wave of 13 Chinese aircraft in the same area on Friday evening. They flew over waters between Taiwan and the Philippines.
25 PLA aircraft (J-16*18, SU-30*4, H-6*2 and Y-8 ASW) entered #Taiwan’s southwest ADIZ on October 1, 2021. Please check our official website for more information: https://t.co/C7012S8hSo pic.twitter.com/HoalLl3Ewx
— 國防部 Ministry of National Defense, R.O.C. 🇹🇼 (@MoNDefense) October 1, 2021
The ministry said the Chinese aircraft included four H-6 bombers, which can carry nuclear weapons, as well as an anti-submarine aircraft.
Beijing often launches such missions to express displeasure at comments made by Taiwan.
It is not clear what prompted the latest mission.
China and Taiwan: The basics
- Why do China and Taiwan have poor relations? China and Taiwan were divided during a civil war in the 1940s, but Beijing insists the island will be reclaimed at some point, by force if necessary
- How is Taiwan governed? The island has its own constitution, democratically elected leaders, and about 300,000 active troops in its armed forces
- Who recognises Taiwan? Only a few countries recognise Taiwan. Most recognise the Chinese government in Beijing instead. The US has no official ties with Taiwan but does have a law which requires it to provide the island with the means to defend itself.
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2021-10-02 06:14:32Z
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