An honorific title for 吕洞宾 lǚ​dòng​bīn, a famous Tang Dynasty Taoist and one of the Eight Immortals; revered as a founder of the Quanzhen school of Taoism and a deity who helps those in need.

The patron deity of ink-making craftsmen, based on a folk connection between the deity's nickname and the traditional name for the god of ink.