2 天之前 · Taiwan, island in the western Pacific Ocean that lies roughly 100 miles (160 km) off the coast of southeastern China.It is approximately 245 miles (395 km) long (north-south) and 90 miles (145 km) across at its widest point. Taipei, in the north, is the seat of government of the Republic of China (ROC; Nationalist China).In addition to the main island, the ROC government has jurisdiction over ...