Flashpoints | Security | East Asia

China’s Liaoning Carrier Heads South: More Than a Routine Drill

The PLA is sending military signals amid the Philippines-U.S. Balikatan exercise and ahead of the Trump-Xi summit.

China’s Liaoning aircraft carrier transits the Taiwan Strait on Apr. 20, 2026.

China’s latest naval movements suggest that Beijing is doing far more than reacting angrily to a Japanese warship’s transit of the Taiwan Strait. The southward passage of the aircraft carrier Liaoning, combined with the deployment of a People’s Liberation Army Navy (PLAN) task group into the Western Pacific, points to a broader strategic design: signaling resolve to Japan, countering the Philippines-U.S. Balikatan exercise (which this year is seeing a record level of participation by Japan), and shaping the military balance ahead of possible high-level diplomacy with Washington.

After the Japanese destroyer Ikazuchi transited the Taiwan Strait, Beijing decided to launch military exercises in the East China Sea on a scale roughly comparable to a joint combat readiness patrol. In addition, on April 19, the PLA Eastern Theater Command dispatched the 133rd naval task group through the Yokoate Channel – a waterway through the Ryukyu Islands close to the Japanese mainland – into the Western Pacific for training activities intended to test the force’s far-seas operational capabilities.

The Eastern Theater Command announced through its official social media account that the deployment of the 133rd task group was a “routine training activity organized in accordance with the annual plan” and “not aimed at any specific country or target.” The composition of the force suggests otherwise. The task group includes the Baotou, a Type 052D guided-missile destroyer often described as a “blade-bearing escort” for aircraft carriers. Together with the aircraft carrier Liaoning, which transited the Taiwan Strait on April 20, these two elements are highly likely to be conducting cross-theater exercises simultaneously, with operations unfolding in both the Philippine Sea in the Western Pacific and the South China Sea.

The military signaling was accompanied by diplomatic and propagandistic messaging. Chinese Foreign Ministry spokesperson Guo Jiakun stated at a regular press briefing that the Taiwan issue is a non-negotiable “red line” and criticized the entry of Japanese naval vessels into the Taiwan Strait as a provocative act that compounded earlier mistakes. “Japanese Prime Minister Sanae Takaichi’s erroneous remarks on Taiwan have already severely impacted China-Japan relations,” Guo said. “The Japanese side is compounding the wrongdoing by sending the Self-Defense Force vessel into the Taiwan Strait to flex its muscles and deliberately provoke China.”

At around midnight on April 19, state media outlet Xinhua also published a commentary accusing Japan of deliberate provocation by choosing April 17 – the 131st anniversary of the signing of the Treaty of Shimonoseki – a date framed in Chinese historical memory as a “day of national humiliation.” Together, these moves have added further strain to already tense Sino-Japanese relations.

Yet the real importance of the current PLAN maneuvers lies not in rhetoric, but in operational geography.

A Countermove Against the Philippines-U.S. Balikatan Exercise

On April 20, the United States and the Philippines launched their annual Balikatan exercise, with an unprecedented level of participation by Japan. In addition to unveiling a range of new military equipment, the exercise marked the first time that the Japan Maritime Self-Defense Force projected forces into the South China Sea to conduct joint drills with U.S. and Philippine forces. Japan also participated for the first time in an operational capacity and is set to conduct a live-fire sinking exercise using Type 88 anti-ship missiles in waters north of Luzon facing the Taiwan Strait. This sends a clear signal that the United States, Japan, and the Philippines possess the capacity to interdict or even blockade the Bashi Channel.

The earlier transit of a Japanese destroyer through the Taiwan Strait also symbolically underscored the fact that Beijing does not enjoy uncontested maritime control over the strait. From China’s perspective, therefore, a military response was necessary. Combined with the deterioration........

© The Diplomat