evidence: In the mid-20th century, Kinmen was on the front line of China's conflict with Taiwan. [...] Kinmen is roughly 1.8 miles from China, according to the Kinmen County Government — but more than 110 miles from the Taiwanese mainland. As a result, "business in Kinmen generally depends heavily on… links with mainland China," said local tour guide Chen Hua Sheng. Half-hour-long boat rides that connect the island with China are running again, but have been mostly filled with Taiwanese passengers since Chinese travelers weren't allowed to visit Kinmen.