Because large ocean-going ships pass by here on their way to Makung Harbor and Taiwan, Hsiyu has always been of strategic military significance, and it has plenty of ancient forts, tunnels, and artillery batteries to attest to the many battles that have taken place here in times past.
由於是大型船隻進入馬公與台灣的最前端，古來就是軍事要地，留下眾多古堡、地道、砲台，訴說著歷史戰役的傳奇。