Shénxiān yànjuànle tiānshàng de shēnghuó, xiǎng tǐyàn fánjiān de xǐ nù āi lè.
The deity tired of heavenly life and wanted to experience the joys and sorrows of the mortal world.
Tips
culture
凡间 is frequently used in Chinese mythology, folk tales, and wuxia/xianxia fiction to contrast the human world with heavenly realms (天界) or the underworld (阴间).