Zhang () was originally a Taoist priest of Guangzong in Xingzhou, with a surname of Mr. Ming. His thoughts mainly include Tao Te Ching, Miao Zhen Ching, Huang Ting Ching and Shen. He was a famous alchemist, health preserving and philosopher in Tang Dynasty.
According to records, Zhang was born in the Tang Dynasty (6 18-907) with his real name. Because he is very old, people add the word "old" to his name to show respect. According to legend, he has been hiding in Zhongtiao Mountain in Shanxi for a long time. Between Jin and Fen. Don Wu Ze is hundreds of years old. Then heaven sent messengers to summon him, that is, to play dead. Later generations saw him living in Hengzhoushan. He often rides a white donkey backwards, tens of thousands of miles a day. Fold the rest donkey and hide it in the towel box. He was called to Beijing by Emperor Xuanzong of the Tang Dynasty to perform various spells, and was named as "Dr. Yin Lu" and "Mr. Xuan Tong". Later, he returned to Zhongtiaoshan on the grounds of "old and sick". Because he often holds a rap tool made of bamboo in his hand, later generations regard him as the founder of Daoqing (a Han rap art in China). According to legend, when visiting immortals in the Northern Song Dynasty, the Eight Immortals climbed Mount Sun Shi at the invitation of Tie Guai Li.