The Penghus made up of 64 islands. All in all Taiwan has more than 100 islands big and small. It is China's biggest island and ranks the 28th of the world islands. The length from north to south of the island proper is 394 kilometers long and its width from east to west is 20-150 kilometers wide. The general topography is high in the east and low in the west.
Many rivers rise in the mid- mountainous area and flow into the sea in all directions.
Because of the steep gradient, the discharge of the rivers is in abundance. There are also different kinds of sea coasts and the topography of mudstone appearing in all their glory and the corals protruding out in the air, unfolding a magnificent picture of their great beauty and majesty. Taiwan belongs to the tropical and subtropical zones, with the Tropic of Cancer running through its middle. However, being surrounded by seas in all sides, Taiwan is embraced by the Pacific Ocean. The majority of Taiwan region falls in the temperate and humid maritime climate zone.