Taiwan's newly acquired HIMARS and Abrams tanks would raise the costs of a Chinese amphibious landing, a defense analyst says.

Taiwan began its annual military drills on Wednesday with troops joined by the largest-ever mobilisation of reservists for 10 days of training aimed at defending against a Chinese invasion.

Taiwan's annual military exercise, Han Kuang, begins on Wednesday as the island ramps up its defence against a possible invasion from China. Billed as the largest and longest one so far, this year's Han Kuang will last for about 10 days, about twice the duration of last year's drill.