The "Sairan Igen" (采覧異言) is a 5-volume geography book by Arai Hakuseki completed in 1713, the first book of world geography published in Japan.
The "Sairan Igen" (采覧異言) is a five-volume geography by Japanese Confucian philosopher, government official, and poet Arai Hakuseki (1657-1725). Completed in 1713, it the first work of world geography published in Japan.