《列子·周穆王》
周穆王时，最西方的国家来了一个有幻化之术的人，他能进入水火之中，穿过金属岩石，能翻倒山河，移动城池；能够悬浮在空中不坠落，碰到实物不被阻碍，千变万化，无穷无尽。
周穆王时，西极之国有化人来，入水火，贯金石；反山川，移城邑；乘虚不坠，触实不硋。千变万化，不可穷极。
During the reign of King Mu of Zhou, a man with the art of transformation came from the westernmost country. He could enter fire and water, pass through metal and rock, turn mountains and rivers upside down, and move cities. He could float in the air without falling, and not be hindered when he encountered objects. There were thousands of changes and endless changes.