Known as the great floating island, Nobourn Island took flight from Zihang at the same moment that the same moment the Fudou Crystals began appearing in clusters, growing from mineral deposits buried deep within the soil. Naturally boyant they lifted the island from the ground, at first slowly, until it had to be anchored by a huge chain, the Shingari Chain. It's a very popular visitation island, and Fudou crystal is harvested by many of the kingdoms for skyships.