evidence: Matsu (馬祖) is the name for a group of islands off China's southern coast, approximately 100 miles NW from the island of Taiwan. The island falls under the jurisdiction of the Republic of China (Taiwan) and along with Kinmen, forms the front lines between the ROC and PRC. [...] Unlike the rest of the ROC-controlled territories, where Minnan or Southern Min dominates, residents of Matsu speak Mindong or Eastern Min, which is not mutually intelligible with Minnan. However, most residents are bilingual in Mindong and Mandarin. [...] Though formal hostilities with the PRC ended by the early 1980s, Matsu is still very much a frontline area. Visitors are strongly advised not to wander off paved roads when exploring the island due to the possibility of running across old unmarked minefields. It is also advisible to avoid traveling to certain sensitive areas after dark, such as coastal areas or areas near military installations. Visitors should also obey all orders given by military personnel and avoid entering or photographing military bases