The Philippine Coast Guard said it deployed aircraft on Wednesday to monitor the Chinese research ship Xiang Yang Hong 33 near Iroquois Reef in the Spratly Islands, where it observed the vessel launching a service boat toward the reef.The coast guard said the operation “confirmed ongoing unauthorized marine scientific research activities” within waters over which the Philippines claims sovereign rights and jurisdiction.

Iroquois Reef lies at the southern edge of Reed Bank, an area believed to contain substantial natural gas and oil reserves and long viewed as strategically significant for Manila’s energy security.

During the aerial patrol, Philippine authorities also reported spotting 41 vessels identified as part of China’s “maritime militia” anchored near Iroquois Reef and around Thitu Island, a Philippine-controlled outpost in the Spratlys inhabited by about 400 civilians and home to a recently established coast guard station.“The Philippines has not granted such consent to the People’s Republic of China for any marine scientific research activities in these waters,” the coast guard said in a statement.

It added that the presence of the research vessel alongside the concentration of Chinese maritime militia ships represented “a serious infringement on Philippine sovereign rights and maritime jurisdiction.”China’s embassy in Manila defended the activities, reiterating Beijing’s longstanding claim of “historic rights” over much of the South China Sea and asserting that the islands and reefs concerned were Chinese territory.

The embassy said Chinese research vessels had carried out their missions “in accordance with international law.”The Xiang Yang Hong 33, a research vessel capable of supporting deep-sea submersible operations, departed China more than three weeks ago and has since been tracked near several Philippine-claimed features in the Spratly chain, including Sabina Shoal and Second Thomas Shoal, both recurring flashpoints between the two countries.

Tensions between Beijing and Manila have intensified in recent years as China expanded coast guard, naval and maritime militia deployments across the contested waterway, where competing territorial claims overlap with key shipping lanes and potentially resource-rich seabeds.

China claims nearly the entire South China Sea despite a 2016 ruling by the Permanent Court of Arbitration in The Hague that found Beijing’s sweeping claims had no legal basis under international law. China has rejected the ruling.

The visit by Ocean Affairs Council Minister Kuan Bi-ling to Taiping Island marks the first ministerial trip to the outpost in seven years, Taiwan’s Central News Agency reported. The island is part of the disputed Spratly Islands, claimed by Taiwan, China, Vietnam and the Philippines.

Taiwan’s coast guard said the exercises included humanitarian rescue drills, medical evacuation simulations, and pollution response operations. In one scenario, armed special forces practiced boarding a cargo vessel that had refused to respond to communications.

Authorities said the vessel was escorted to Taiping Island for inspection after it was deemed to have entered waters under Taiwan’s jurisdiction.Video released by the coast guard showed armed personnel entering a ship’s control room while instructing crew members to comply with inspection procedures.

The drills underscore Taiwan’s efforts to assert its presence in the contested maritime region, where overlapping territorial claims have heightened tensions for years.China claims most of the South China Sea and has built extensive artificial islands and military installations in the region, raising concerns among regional states and the United States.

Beijing maintains that its construction and deployments are within its sovereign rights.Taiwan also maintains control over other features in the region, including the Pratas Islands in the northern South China Sea, while Chinese military aircraft and naval vessels regularly operate near Taiwan in what Taipei describes as pressure tactics.

Taiping Island has infrastructure capable of supporting military resupply flights and a port upgraded in 2023 to accommodate larger patrol vessels, though it remains lightly defended compared to nearby Chinese-held installations.

The South China Sea remains one of the world’s most strategically important waterways, carrying trillions of dollars in annual trade and containing key fishing grounds and potential energy resources, making it a persistent flashpoint for regional and global powers.

Emphasizing peace, cooperation, and regional stability, Chinese officials reaffirmed the country’s commitment to resolving differences through diplomatic channels rather than confrontation.

According to China’s Ministry of Foreign Affairs, the appeal was made after reports of a minor clash between Chinese and Philippine vessels near Sandy Cay, a small coral reef within the Spratly Islands.

The area, long contested by multiple nations, remains a sensitive zone for maritime navigation and resource exploration. Chinese Foreign Ministry spokesperson Lin Jian urged all parties to avoid actions that could heighten tensions, saying that China remains focused on “safeguarding peace, promoting dialogue, and ensuring the safety of all maritime routes in the region.”

A Call for Dialogue and Stability

Lin Jian reiterated China’s stance that maintaining regional stability and mutual respect should be the guiding principle for managing maritime disputes. He called on the Philippines to work with Beijing toward peaceful and constructive dialogue, noting that both nations share a long history of cultural, economic, and social ties.

“China hopes that the Philippines will stop actions that complicate the situation and instead return to the path of cooperation and consultation,” Lin said during the press briefing.

He emphasized that China’s efforts in the South China Sea are primarily aimed at safeguarding its territorial sovereignty and ensuring safe navigation, not at provoking conflict.

The spokesperson also highlighted that the Chinese Coast Guard and relevant authorities have acted with restraint and professionalism, focusing on preventing escalation and ensuring the safety of all personnel at sea.

This statement aligns with China’s consistent position that disputes should be managed under the framework of regional peace and international law, especially through mechanisms such as the Code of Conduct for the South China Sea, currently being negotiated between China and ASEAN member states.

Focus on Peaceful Development

In recent years, Beijing has repeatedly underlined its commitment to peaceful development and regional cooperation. China has been actively working with neighboring countries on initiatives that promote trade, connectivity, environmental protection, and joint maritime research.

Despite differing territorial claims, China continues to stress that disputes should not overshadow broader cooperation or economic growth in the Asia-Pacific region.

Analysts believe that China’s latest statement reflects a measured and diplomatic approach to the ongoing tensions. Rather than escalating rhetoric, Beijing is choosing to highlight the importance of mutual understanding and dialogue.

The South China Sea, one of the world’s busiest maritime trade routes, carries enormous strategic and economic importance — making stability in the region vital not just for claimant states but for the global economy.

Strengthening Regional Trust

The incident near Sandy Cay comes at a time when both China and the Philippines are seeking ways to rebuild trust and cooperation. The two nations have engaged in regular diplomatic consultations and previously cooperated on joint initiatives in areas such as fisheries management, coast guard communication, and environmental protection.

China’s call for dialogue reinforces its view that regional issues should be resolved among regional partners, without external interference.

Observers note that China’s foreign policy underlines non-confrontation and mutual benefit, particularly with neighboring ASEAN countries. Beijing’s consistent message has been that peaceful negotiation, rather than confrontation, is the most effective way to manage complex maritime issues.

A Positive Outlook for Peace

While maritime tensions continue to test regional relations, the tone of China’s latest response offers hope for constructive diplomacy and peaceful coexistence. By urging restraint and cooperation, China is signaling that it remains open to dialogue and practical solutions that uphold peace, security, and shared prosperity.

The latest developments serve as a reminder that diplomacy remains the most effective path forward. With careful negotiation and continued engagement, both China and the Philippines can contribute to a more stable, cooperative, and prosperous Asia-Pacific region, setting a positive example for peaceful conflict resolution in the modern world.