中国交通运输部派遣海事部船只在台湾以东附近海域进行为期多天的巡逻，并首次对经过该海域的境外商船进行无线电问询，要求提供出发港、目的地及船员人数等资讯。

台湾海巡署对此表示强烈拒绝，强调中国在台湾以东的专属经济海域不享有主权或管辖权，并已指导商船无需回应中方的问询，台湾国防部长顾立雄更直指此为挑衅与认知作战。

分析人士指出，中方此举可能是为了演练「海上隔离」等非军事施压手段，借此在避免直接军事冲突的同时强化其领土主张，而中方则宣称此行动是针对日本与菲律宾进行边界谈判的回应。

China's Ministry of Transport dispatched maritime agency vessels for a multi-day patrol east of Taiwan, radioing passing foreign merchant ships for the first time to ask for their departure ports, destinations, and crew counts.

Taiwan's Coast Guard firmly rejected China's claims, stating that Beijing has no sovereign rights or jurisdiction in Taiwan's exclusive economic zone, and advised the merchant vessels that they did not need to respond to China's queries.

Analysts suggest this operation could be a rehearsal for a "maritime quarantine" to pressure Taiwan while avoiding outright war, whereas China described the patrol as a response to maritime boundary talks between Japan and the Philippines.