Mashan Observing Station Introduction
Masan, located in Jincheng Township, is only 2,100 meters from the nearby Jiao Island, and during low tide, it is just 1,800 meters away, making it the closest point between Kinmen and Xiamen. In the past, it served as a military outpost for observing maritime activities on the opposite shore, earning the title of "The First Scout Under Heaven."