TAOYUAN, Taiwan — China’s increasing military projection around East Asia is undermining regional stability, Taiwan’s president, Tsai Ing-wen, said at a year-end news conference on Friday just days after Beijing reiterated its goal of annexing the self-ruled democracy.

Growing military pressure from mainland China “is not just a situation that Taiwan faces,” Ms. Tsai said. “It is a situation that all of the countries in the region face.”

She made her comments at the National Chung-Shan Institute of Science and Technology, home to Taiwan’s defense research and development program. Last year, her year-end news conference was held at the presidential building in Taipei, the capital.

The military-themed setting for this year’s news conference, attended by domestic and foreign journalists, was meant to underline Taiwan’s commitment to defending itself, she said.