Taiwan’s Ministry of National Defense said it detected 21 Chinese military aircraft, including J-16 fighter jets and unmanned aerial vehicles, operating around Taiwan on Monday alongside Chinese naval vessels participating in what Beijing describes as a joint combat readiness patrol.

The patrol marked the second such operation within a week and came as Taiwan remains alert to potential shifts in Chinese military behavior following discussions on Taiwan between Chinese President Xi Jinping and U.S. President Donald Trump during Trump’s recent visit to Beijing.

China claims Taiwan as part of its territory and has steadily increased military pressure on the island through frequent deployments of warships and military aircraft. Taiwan’s government rejects Beijing’s sovereignty claims and maintains that only the island’s people can determine their future.

According to Taiwan’s defense ministry, the Chinese aircraft and naval vessels operated around multiple sectors of the island before the patrol concluded. Taipei responded by dispatching ships and combat aircraft to monitor the movements and maintain surveillance.

The ministry also released images captured by Taiwanese forces, including photographs from an F-16 fighter showing two Chinese aircraft flying near a Y-20 aerial refueling tanker. Additional images showed the Chinese guided-missile destroyer Yinchuan and a Taiwanese sailor observing the vessel through binoculars.

Speaking in Taipei on Tuesday, Pan Chun-kuang of the defense ministry’s intelligence department said the latest patrol had ended but stressed that Taiwan continued to monitor Chinese military activities in surrounding waters and airspace.

Pan said Taiwan was closely tracking the movements of China’s aircraft carrier Liaoning in the Western Pacific and would provide additional information on Chinese deployments when necessary.

The latest operation followed a similar Chinese readiness patrol conducted last Tuesday, one day before Taiwan President Lai Ching-te marked the second anniversary of his administration. Beijing has repeatedly labeled Lai a separatist and has rejected his offers for dialogue.

Military activity has also extended beyond the Taiwan Strait. Over the weekend, Taiwan’s coast guard reported an encounter with a Chinese coast guard vessel near the Taiwan-controlled Pratas Islands, a strategically important outpost in the northern reaches of the South China Sea.

Separately, Taiwan National Security Council Secretary-General Joseph Wu said on social media that approximately 100 Chinese vessels were operating within the so-called first island chain, a strategic maritime corridor stretching from Japan through Taiwan to the Philippines.

China’s Ministry of National Defense did not immediately comment on Taiwan’s account of the patrol.

The increased tempo of Chinese military operations reflects Beijing’s continued effort to assert its claims over Taiwan while testing the island’s defensive readiness and signaling its opposition to any moves it perceives as supporting Taiwanese sovereignty.

Joseph Wu, secretary-general of Taiwan’s National Security Council, said in a post on X that the deployment had taken place over the past few days following U.S. President Donald Trump’s meeting with Chinese President Xi Jinping in Beijing. Wu said China was undermining the status quo and threatening peace and stability in the region.

A Taiwan security official, speaking on condition of anonymity, told AFP that Chinese vessels had been detected before the Beijing summit but that the number operating in the region had risen above 100 in recent days.

China, which views democratically governed Taiwan as part of its territory, has repeatedly stated that it reserves the right to use force to bring the island under its control.

Taiwan rejects Beijing’s sovereignty claims and maintains that only its people can determine the island’s future.The reported increase in Chinese maritime activity came days after Trump referred to “the Taiwan problem” when asked whether he would discuss arms sales with Taiwanese President Lai Ching-te.

Trump said he would speak with Lai and noted that he had held what he described as a productive meeting with Xi during his state visit to China.“We’ll work on that, the Taiwan problem,” Trump said on Wednesday.

Taiwan has frequently reported heightened Chinese military and coast guard operations around the island, activities that Taipei says are aimed at increasing pressure on its government and testing regional security responses.

The latest deployment, according to Taiwanese officials, extended across multiple strategic waterways in East Asia, underscoring Beijing’s expanding maritime presence at a time of heightened geopolitical scrutiny in the Taiwan Strait and surrounding seas.

Taiwan’s Foreign Ministry thanked Washington for reaffirming that U.S. policy toward the self-governed island remained unchanged, following remarks by U.S. Secretary of State Marco Rubio during Trump’s state visit to China.In a statement, Taiwanese Foreign Minister Lin Chia-lung expressed appreciation for repeated U.S. statements emphasizing peace and stability across the Taiwan Strait.

The ministry also accused Beijing of continuing military intimidation around the island through regular naval and air operations.“This demonstrates that Beijing is a major risk to current regional peace and stability,” the ministry said.Taiwan has emerged as the central flashpoint in increasingly strained U.S.-China relations, with Beijing claiming the democratically governed island as its territory and refusing to rule out the use of force to achieve unification.

Xi warned Trump during Thursday’s meeting that mishandling Taiwan-related disputes could push bilateral relations into a “dangerous place,” according to Chinese officials familiar with the talks.Rubio later told NBC News that it would be a “terrible mistake” for China to use force against Taiwan, reiterating Washington’s longstanding position supporting the island’s ability to defend itself.

Taiwan National Security Council Secretary-General Joseph Wu endorsed Rubio’s comments in a post on X, stating that Taiwan was determined to “defend the status quo and deter aggression.”Taiwan’s defense ministry said seven Chinese warships were operating around the island during the previous 24 hours, although no Chinese military aircraft were detected.

A senior Taiwanese security official said the island occupied a critical position within the so-called “first island chain,” a strategic arc stretching from Japan through Taiwan to the Philippines that is viewed by Washington and its allies as central to Indo-Pacific security.

Taipei is also closely monitoring whether Beijing increases military deployments following the Trump-Xi summit and ahead of the second anniversary next week of President Lai Ching-te taking office, the official said.China’s Defense Ministry did not immediately respond to requests for comment.

The latest exchanges underscore how Taiwan remains one of the most sensitive and potentially destabilizing issues between Washington and Beijing despite efforts by both governments to stabilize broader ties through diplomacy and trade engagement.