The Eastern Theater Command said on social media that the drills involved a frigate, identified in its video as the Huanggang, as well as fighter jets, a tanker aircraft, an airborne radar system and an electronic-warfare aircraft.
The stated goal of the exercise is to train air combat, obtaining air supremacy, providing air support to naval forces, and to test "joint blockade and control capabilities in a complex electromagnetic setting."
China announced snap drills around Taiwan last Thursday in response to a visit of US House Speaker Nancy Pelosi, the highest-ranking US official to come to the island in decades. Taiwan accuses China of preparing to invade, a claim denied by Beijing, which sees Taiwan as its own territory.