 When the tide ebbs, the stack standing in between connects Dongyin and Xiyin (Siyin), but standing alone at sea when the tide refluxes.An embankment was built in 1986 to link Dongyin and Xiyin (Siyin).To show their gratitude for the grand construction, the troops and inhabitants on the island built a pavilion on the stack, with a sitting statue of Chiang Ching-kuo inside.