Taiwan has raised the alarm over continuous Chinese military maneuvers in the Taiwan Strait, accusing Beijing of attempting to disrupt the region's decades-long status quo.
Taiwan conducted its live-fire military exercises on Tuesday, while China's military drills continued into the week.
The drills began just after 0040 GMT with the launching of target flares and artillery and finished a little under an hour later at 0130 GMT, according to Lou Woei-you, spokeswoman for Taiwan's Eighth Army Corps.
On Monday, Lou told the AFP news agency that the military drills were planned and not in response to Chinese posturing near the island.
Taiwan's army announced that the drills will resume on Thursday, with hundreds of troops and around 40 howitzers deployed.
China's operations have been expanded.
China had planned to hold military drills from Thursday to Sunday in response to US House Speaker Nancy Pelosi's travel to Taiwan. Still, the Chinese military's Eastern Theater Command later announced additional training on Monday and Tuesday.
On Tuesday, the Chinese army said it will continue to conduct military drills and exercises in the seas and skies surrounding Taiwan, emphasizing blockades and resupply logistics.
On Monday, China's army concentrated on combined anti-submarine and sea assault operations.
Taiwan conducted drills on Tuesday to simulate how it would defend the island if attacked.
At a news conference on Tuesday, Taiwan's Foreign Minister Joseph Wu told reporters, "China has exploited the drills and its military playbook to prepare for the invasion of Taiwan."
"China's true objective is to change the status quo in the Taiwan Strait and throughout the region," Wu explained.
China's drills in the Taiwan Strait have been criticized by the United States, Australia, and Japan.
A standoff has been reported in the Taiwan Strait.
Reuters reported on Tuesday, citing an anonymous source, that approximately 20 Chinese and Taiwanese naval warships were stationed along the Taiwan Strait's middle line.
The median line is an unofficial dividing line between China and Taiwan that is not legally recognized by either party but is generally acknowledged by both.
Both China and Taiwan see the seas as theirs, just as China regards Taiwan as a part of China and Taiwan as China's government in exile.
The US proposed the dividing line, and for decades both sides maintained an unspoken agreement not to cross it. China, on the other hand, first broke over the unofficial boundary in 1999 and has been doing so with increasing frequency since.