Chinese warplanes made 159 incursions into Taiwan's air defence zone in November according to AFP's database, the second-highest month on record as Beijing continues to pile military pressure on the democratic island.

Self-ruled Taiwan lives under the constant threat of invasion by China, which views the island as its own territory and has vowed to seize it one day, by force if necessary.

Beijing has ramped up pressure on Taiwan since President Tsai Ing-wen came to power in 2016, as she rejects its stance that the island is part of "one China".

Over the past 14 months, the sabre-rattling has reached new peaks after Beijing began sending an increasing number of warplanes into Taiwan's air defence identification zone (ADIZ), which Chinese military aircraft had previously largely avoided.

A Taiwanese F-16 fighter jet flying next to a Chinese H-6 bomber (top) in Taiwan's airspace
Representation. A file image of Taiwanese F-16 fighter jet flying next to a Chinese H-6 bomber (top) in Taiwan's airspace. Taiwan's Defence Ministry via AFP / Handout

The escalatory moves have heightened fears among Western allies like the United States and Japan that China could order an invasion of Taiwan, even if they consider it unlikely for now.

On Tuesday, the Pentagon unveiled plans to reinforce deployments and bases directed at China, upgrading and expanding military facilities in Guam and Australia.

Taiwan's defence ministry began making the Chinese warplane incursions into the ADIZ public in September 2020 and AFP has built a database collecting details of the flights, which have been increasing in both size and frequency.

November was the third month in a row where more than 100 warplanes have made forays.

Graphic charting recent Chinese military plane flights over Taiwan's air defence identification zone, according to the island's ministry of defense announcements via Twitter.
Graphic charting recent Chinese military plane flights over Taiwan's air defence identification zone, according to the island's ministry of defense announcements via Twitter. AFP / John SAEKI

The incursions last month included 100 by fighter jets and nine by China's nuclear-capable H6 bombers.

The defence zone is not the same as Taiwan's territorial airspace. Instead, it includes a far greater area that overlaps with part of China's own air defence identification zone.

Graphic on recent Chinese military plane flights over Taiwan's air defence identification zone, with chart on daily incursions, factfile on the J-16 fighter jet, and map of the affected area.
Graphic on recent Chinese military plane flights over Taiwan's air defence identification zone, with chart on daily incursions, factfile on the J-16 fighter jet, and map of the affected area. AFP / John SAEKI

Beijing has stuck to probing the southwestern part of zone. Near daily smaller flights keep Taiwan's already ageing fleet of fighters under stress while Beijing also sometimes sends larger numbers to show displeasure over specific events.

October remains the busiest month on record with 196 incursions, 149 of which were made over just four days as Beijing marked its annual National Day.

November saw fewer large scale incursions but a near-daily trickle of planes.

Taiwan's military recorded only three days in November without an incursion.

"The recent situation is particularly grim with almost non-stop (incursions)," defence minister Chiu Kuo-cheng said on Monday, after a sortie by 27 Chinese aircraft the day before, the biggest of the month but only the fifth-largest daily incursion on record.

China's "intention is to slowly exhaust (us), to let you know that we have this power," he added.

Chiu has previously warned that military tensions between Taiwan and China are at their highest in four decades, adding Beijing would be in a position to launch a full-scale invasion in 2025.

In September, the third-highest month on record, there was an incursion every day apart from one day with a total of 117 sorties.

So far this year, nearly 900 Chinese planes have intruded into Taiwan's ADIZ. Since Taiwan's defence ministry first began making the forays public in September last year, more than 1,000 flights have been made.

A biennial defence report released by Taipei's defence ministry last month said China's "frequent manipulation of grey zone threats" such as the warplane incursions are aimed at "seizing Taiwan without a fight".

"The PRC coercive action is obviously meant to bring Taiwan to its knees and keep us away from our democratic partners," foreign minister Joseph Wu tweeted on Monday.

"Make no mistake: we'll never bow to CCP pressure."