Difficulty of travel to Gaoshan
"The area of Gaoshan town, Fuqing County, where Japanese women reside after having been taken there by Chinese men, is a coastal region 285 Chinese li south of Fuzhou (according to the postal map, but the Chinese people say it is over 400 Chinese li). It takes three nights and four days to reach there overland, and two nights and three days by water, and the transportation is extremely inconvenient."
Fuzhou Consul General Tamura to Foreign Minister/Prime Minister Tanaka, 1929-04. DAMFAJ K.18.104.22.168.