Zhang Guo, better known as Zhang Guolao, is a Chinese mythological figure and one of the Eight Immortals in the Taoist pantheon. Among the Eight Immortals, Zhang Guolao, Zhongli Quan and Lü Yan were real historical figures. His existence is said to have begun around the middle or end of the 7th century, and ended approximately in the middle of the 8th. The epithet "Lao" added at the end of his name means "old".
Zhang Lu's painting of Zhang Guolao, early 16th century
Zhang Guo Lao "decanting" his horse; Japanese painting, late 19th - early 20th century
A woodcut of Zhang Guo, carrying a fish-drum.
The Eight Immortals are a group of legendary xian (immortals) in Chinese mythology. Each immortal's power can be transferred to a vessel (法器) that can bestow life or destroy evil. Together, these eight vessels are called the "Covert Eight Immortals" (暗八仙). Most of them are said to have been born in the Tang or Song Dynasty. They are revered by the Taoists and are also a popular element in secular Chinese culture. They are said to live on a group of five islands in the Bohai Sea, which includes Mount Penglai.
Gathering of Yaochi (Eight) Immortals (瑤池仙劇圖), by Zhang Chong, Ming dynasty (British Museum)
The Eight Immortals (Walters Art Museum)
The Eight Immortals crossing the sea, from Myths and Legends of China. Clockwise in the boat starting from the stern: He Xian'gu, Han Xiang Zi, Lan Caihe, Li Tieguai, Lü Dongbin, Zhongli Quan, Cao Guojiu and outside the boat is Zhang Guo Lao.
Statue of the Eight Immortals in Penglai City, Shandong