The Chinese military sent naval and air forces for ¡°joint combat readiness patrols¡± in the waters and airspace of the East China Sea on Saturday, a day after a Japanese warship transited the Taiwan Strait.

The exercises were ¡°a routine arrangement organized in accordance with the annual plan, aiming at testing the joint operations capabilities,¡± Senior Col. Xu Chenghua, a spokesperson for the Chinese military¡¯s Eastern Theater Command, said in a statement.?

Xu said the Eastern Theater Command ¡°will routinely organize relevant military operations based on the need of the security situation, and safeguard state sovereignty and security as well as regional peace and stability.¡±

Also Saturday, the China Military Bugle, an official press account of China¡¯s armed forces, posted a video on X showing drone-captured footage of Eastern Theater Command naval and air forces monitoring the movement of the Maritime Self-Defense Force¡¯s Ikazuchi destroyer sailing in the Taiwan Strait on Friday.

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The account also released a poster depicting a Chinese hammer about to hit an MSDF warship being piloted by a skeleton wearing an Imperial Japanese Navy uniform.???

Chinese Foreign Ministry spokesman Guo Jiakun told reporters at a regular press briefing Friday that Beijing had monitored the vessel throughout its transit from around 4 a.m. to 5:50 p.m., saying that Japan had used the move to ¡°flex its military muscle and deliberately provoke trouble.¡±

The Defense Ministry in Tokyo declined to comment on the claim. The MSDF was first reported to have sent a vessel through the strait in 2024, and conducted two more transits in 2025, according to local media.

The Maritime Self-Defense Force¡¯s Ikazuchi destroyer sails in Sagami Bay off Kanagawa Prefecture in October 2015.
The Maritime Self-Defense Force¡¯s Ikazuchi destroyer sails in Sagami Bay off Kanagawa Prefecture in October 2015. | JIJI

Ties between Japan and China have plummeted to the lowest point in decades following Prime Minister Sanae Takaichi¡¯s remarks in parliament on Nov. 7 that the Self-Defense Forces could be deployed under the right to collective self-defense in ¡°worst-case¡± scenarios, such as a Chinese naval blockade of Taiwan, which the prime minister said would constitute a ¡°survival-threatening situation¡± for Japan.

The comments, the first by a sitting prime minister to detail a specific case of how Tokyo might respond to a Taiwan Strait crisis, triggered outrage in Beijing. China claims Taiwan as its own and has vowed to bring the democratic island under its control, by force if necessary.