Among them is the well-restored Chongwu Fortress in Chongwu Town, Huai'an County, and the ruins of the Liu'ao Fortress in Liu'ao, Zhangpu County.
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Jeong Mong-ju was dispatched to Japan to deal with the problem, and during his visit Kyushu governor Imagawa Sadayo suppressed the early wokou, later returning their captured property and people to Korea.
A mysterious man Amawari, Documents of Wakou in Okinawa, A lovely Yaeyama girl, Nakasone Toyomiya in Miyako, Grand kumi stages of old Ryukyu, Poems of Southern Islands, The Bible translated into the Ryukyu language by Bernard Jean Bettelheim, On Konko-knshuu (Old Ryukyu language dictionary), Akainko, the first Okinawan music musician.
They learn that Dongfang Bubai has seized control of the Sun Moon Holy Cult and is secretly plotting with some wokou (Japanese pirates) to rebel against the Ming imperial court and dominate China.
Tsushima became one of the major bases of the Wokou, Japanese pirates, also called wakō, along with the Iki and Matsuura.