Zhāng Zhìhé 張志和 (traditional dates c. 730–810), zì Zǐ tóng 子同, hào Xuán zhēn zǐ 玄真子 / Yān bō diào tú 煙波釣徒, was a mid-Táng Daoist recluse, poet, and painter of Jīn huá 金華 (Zhè jiāng). Best remembered for his Yú gē zǐ 漁歌子 (Fisherman-Song) lyrics, he also authored the Daoist philosophical treatise KR5d0052 Xuán zhēn zǐ 玄真子. Traditional hagiography portrays him drowning in the Zhè jiāng and attaining immortality.