Geography of Taiwan its narrowest. Part of the continental shelf, the Strait is no more than deep, and has become a land bridge during glacial periods. To the south, the island of Taiwan is separated from the Philippine island of Luzon by the -wide Luzon Strait. The South China Sea lies to the southwest, the East China Sea to the north, and the Philippine Sea to the east. Smaller islands of the archipelago include the Penghu islands in the Taiwan Strait west of the main island, with an area of , the tiny islet of Xiaoliuqiu off the southwest coast, and Orchid Island
Flag of the Republic of China flag has developed a great deal of additional symbolism due to the unique and controversial political status of Taiwan. At one level, the flag represents a clear symbol that Taiwan is not governed by the same government as Mainland China, as this flag is different from the flag of the People's Republic of China (PRC). Meanwhile, because it was formerly used as the flag over all of China, the flag has become a symbol of continuity with the ideals of the Chinese nationalism and Chinese reunification movements, and has become a symbol of a connection both historical and current with