三民主義
In August 1986, the new Kinmen Defense Commander, General Zhao Wan-fu () instructed the 158 Division Commander, Major-general Gong Li () to construct two propaganda walls - one on Dadan, the other on Erdan - with the slogan proclaiming "Three Principles of the People Unify China" facing the international seaway of Xiamen Bay, whereas Xi Jinping was the Deputy Mayor of Xiamen City.