Zhongzhu Harbor is the major entry point to Dongyin Island, and is located at Nan'ao. Behind the main harbor building is a stone visible to every ship that comes to dock on which is carved ""Zhongzhu Harbor.""Before the harbor's completion, people and goods had to be conveyed by small watercraft in a journey fraught with peril. Since the harbor's opening in 1988, Dongyin has been much better connected to the outside world, allowing tourism to develop on this outcrop.