Introduction to Tayu: Tayu is located in the sea 0.6 kilometers northeast of Nan'ao Island. The island is shaped like a tiger and was originally called Huyu. In the 16th year of Daoguang reign of the Qing Dynasty (AD 1836), the Longmen Stone Pagoda was built, and the island was named after the tower. The island is composed of granite, with an area of ​​0.028 square kilometers and an altitude of 27 meters. The water depth in the nearby waters is 5-10 meters. It is rich in various shrimps, grouper, croaker, squid, etc.