TAIPEI, Taiwan — China held live-fire drills off the coast of its southern Fujian province facing Taiwan, just a week after a massive air-and-sea drill it described as punishment for Taiwan’s president rejecting Beijing’s claims of sovereignty.

Taiwan’s imports of liquefied natural gas could be vulnerable if China someday imposed a blockade, the archipelago’s defense chief said — highlighting the concern Beijing’s military activity is raising in Taipei.

China employed a record 125 aircraft, as well as its Liaoning aircraft carrier and ships, in large-scale military exercises surrounding Taiwan and its outlying islands Monday, simulating the sealing off of key ports in a move that underscores the tense situation in the Taiwan Strait,