TAIPEI: Taipei’s defense ministry said it had detected 21 Chinese military aircraft around the self-ruled island since 8:15 am (0015 GMT) on Saturday, a month before Taiwan’s May 20 inauguration of incoming president Lai Ching-te.
“17 aircraft (of the 21) crossed the median line and its extension, entered our northern, central, and southwestern (air defense identification zone), and joined PLA vessels for joint combat patrol,” it said in a statement posted on X around 11:30 am.
Taiwan’s armed forces “are monitoring the activities with our joint surveillance systems, and have dispatched appropriate assets to respond accordingly.”
The median line bisects the Taiwan Strait, a narrow 180-kilometer waterway separating the island from mainland China.
Beijing does not recognize the line as it claims democratic Taiwan as part of its territory. It has also never renounced the use of force to bring the island under its control.
China sends warplanes and naval vessels around Taiwan on a near daily basis — a move experts say is a form of “grey-zone harassment,” stopping short of an outright act of war but enough to exhaust Taipei’s armed forces.
According to the defense ministry, the 21 aerial objects detected Saturday included J-16 fighter jets and Y-8 medium-range transport aircraft, as well as drones.
The highest number around Taiwan so far this year was in March, when the ministry said 36 Chinese aircraft were detected in a single 24-hour period.
Last year’s record was in September when Beijing’s military sent 103 aircraft — 40 of which crossed the median line — in a 24-hour period.
Saturday’s show of force comes a day after China activated two aviation routes that run close to Taiwan’s outlying islands of Kinmen and Matsu.
Taipei’s Civil Aviation Administration expressed “solemn protest against China’s unilateral measures without consultation” on Friday.
The new routes make the airspace separation between the two sides “very narrow,” it said, increasing flight safety risks during bad weather or abnormal flight operations.
China’s aviation authority also said Friday the airspace around Fuzhou Changle Airport — 30 kilometers from the closest outlying Taiwanese island — would be “further optimized and adjusted” on May 16, four days before the inauguration.
Under the administration of Taiwanese President Tsai Ing-wen, tensions between Beijing and Taipei have ramped up, as she and her government do not acknowledge China’s claim.
Her deputy, Vice President Lai, won elections in January despite warnings from Beijing that he would be the cause of “war and decline” for Taiwan.
China regards Lai — who used to be outspoken about Taiwan independence — as a “dangerous separatist,” though he has moderated his views in recent years.

LONDON: A group of 160 financial companies on Friday urged governments to agree a treaty to end plastic pollution that would help spur private sector action, ahead of the next round of global talks in Canada.
The fourth meeting of the Intergovernmental Negotiating Committee on Plastic Pollution (INC-4) is due to be held in Ottawa next week to lay the groundwork for an eventual deal before the end of the year.
Curtailing the estimated 400 million metric tonnes of waste produced every year is a crucial part of efforts to protect biodiversity, with microplastics found everywhere from the mountainous Himalayas to staple foods and even human blood.
To help fix the problem, the finance firms, which include Britain’s biggest investor Legal & General Investment Management and Canadian pension investor CDPQ, called for a policy framework backed up by binding rules.
Among specific steps, the group called for the treaty to set an objective for all public and private finance to be consistent with the goal of eliminating plastic pollution, similar to that in the Paris climate agreement and the Kunming-Montreal global biodiversity framework.
It also called for companies to assess and disclose plastic-related risks and opportunities; clearer plastic-related policies and targets from governments in areas like waste creating and recycling; and for further private investment to be directed to ending plastic pollution.
“A clear transition pathway laid out in the Treaty will help leverage finance at scale for this massive task of ending plastic pollution worldwide,” said Anne-Sophie Castelnau, global head of sustainability at ING, one of the signatories.
Steve Hardman, CEO of Plastic Collective, an NGO which designed the world’s first plastic waste reduction bond alongside Citi and the World Bank, welcomed the support but called for business to provide more financial solutions.
In January, the World Bank issued the $100 million bond to finance plastic-reduction projects in Ghana and Indonesia. Investors will be paid a rate linked to plastic removal credits generated by the projects.