A real Chinese blockade of Taiwan would be an act of war and have far-reaching consequences for international trade, Defence Minister Wellington Koo said on Wednesday after drills by China last week practiced such a scenario.

Taiwan's government offered rare details on Tuesday of its wartime food plan, saying it is taking monthly inventories of crucial supplies like rice and making sure they are properly stored across the island in case of a Chinese blockade.

China's military conducted live-fire drills Tuesday off an island 65 miles northwest of Taiwan involving 26 ships and aircraft, some of which crossed the so-called median line down the middle of the Taiwan Strait.

China is holding live-fire drills off the coast of its southern Fujian province that faces Taiwan. The new exercises Tuesday are taking place just a week after China held a massive air-and-sea drill it called punishment for Taiwan’s president rejecting Beijing’s claims of sovereignty.

A Chinese aircraft carrier group sailed through the Taiwan Strait, travelling in a northerly direction after passing through waters near the Taiwan-controlled Pratas islands, Taiwan's defence ministry said on Wednesday.

Series of plans would ensure food distribution and energy supply remain undisturbed during potential Chinese military blockade

China has begun a series of live-fire exercises close to Taiwan in a continuation of military drills that began last week and put the self-ruled state on alert.