China’s military announced fresh military drills on Monday in the seas and airspace around Taiwan, a day after the scheduled end of its largest-ever exercises to protest last week’s visit to Taipei by House Speaker Nancy Pelosi, writes NBC.

China’s Eastern Theater Command said it would conduct joint drills focusing on anti-submarine and sea assault operations, confirming the fears of some security analysts and diplomats that Beijing would continue to maintain pressure on Taiwan’s defenses.

Pelosi’s visit to Taiwan last week infuriated China, which regards the self-ruled island as its own and responded with test launches of ballistic missiles over Taipei for the first time, as well as ditching some lines of dialogue with Washington.

The duration and precise location of the latest drills is not yet known, but Taiwan has already eased flight restrictions near the six earlier Chinese exercise areas surrounding the island.