Does the Taiwan Province Strait belong to the high seas or the inland seas?

Taiwan Province Strait belongs to the high seas. I. Division of Inland Sea and High Sea According to the provisions of the United Nations Convention on the Law of the Sea, the width of a country's territorial sea shall not exceed 12 nautical mile (1 nautical mile = 1.852 meters). China issued a statement, taking Niushan Island, Wuqiuyu Island, Ding Dong Island and Daguanshan Island in Fujian as the territorial sea base points, dividing the territorial sea baseline, and the waters within the territorial sea baseline belong to the inland sea of China.