In 1966, Macau was convulsed by rioting in which several people were shot and killed by Portuguese security forces. The enclave's left-wing groups, which were closely allied with Beijing, took advantage of the situation to get KMT organizations in Macau shut down and their people expelled. Ever since, Macau has been regarded in certain circles in Taiwan as a "semi-liberated area."
一九六六年，澳門曾因當地民眾與葡國警方的衝突，引發群眾流血被殺的「一二三事件」，與中共有深厚淵源的澳門左派勢力藉此剷除國民黨在澳勢力，國民黨駐澳機構被封館、主要工作人員被驅離，澳門從此被台灣相關人士稱為「半解放區」。