It’s worth noting that Taiwan would be much more difficult to invade than Ukraine. Ukraine is mostly flat, so the Russian army was able to roll in with ease, whereas Taiwan is a mountainous island and has few beaches that Chinese forces could easily land on.
The island is made up of a heavily-forested mountain ridge that runs down the length of the roughly oval-shaped island, which from north to south is 395km (245 miles).
To the west of the mountain ridge lie fertile plains and large sprawling cities. Taipei, the capital, is in the north, Taichung is in the centre and Kaohsiung to the south are spread out, forming a natural defensive barrier that would slow any advance by the Chinese People’s Liberation Army (PLA) to a crawl. Soldiers would have to fight their way through dense, urban sprawls and blocks of apartments that can easily be turned into heavily defended strongpoints.
The whole western side of the island is crisscrossed with rivers and canals. Taiwan has few beaches suitable for amphibious landings and any force would immediately have to fight its way ashore while deadly counterfire poured down from the surrounding high buildings and cliffs overlooking the beaches.
Also, Chinese forces could only invade during certain times of year, because during other times, the weather in the Taiwan Strait is too hostile.
It’s worth noting that Taiwan would be much more difficult to invade than Ukraine. Ukraine is mostly flat, so the Russian army was able to roll in with ease, whereas Taiwan is a mountainous island and has few beaches that Chinese forces could easily land on.
From Al Jazeera:
Also, Chinese forces could only invade during certain times of year, because during other times, the weather in the Taiwan Strait is too hostile.