I believe your dream referred to 'loo choo', not loo doo. Here's info and link from Wiki:
"The Ryukyu Islands, also known as the Nansei Islands (南西諸島, Nansei-shotō?, literally Southwest Islands),[1] is a chain of islands in the western Pacific, on the eastern limit of the East China Sea and to the southwest of the island of Kyūshū in Japan. From about 1829 until the mid 20th century, they were alternately called Luchu,
Loochoo, or Lewchew, akin to the Mandarin pronunciation Liuqiu."
http://en.wikipedia.org/wiki/Ryukyu_Islands