Taiyi Zhenren (Chinese: 太乙真人; pinyin: Tàiyǐ Zhēnrén) is a deity in Chinese religion and Taoism. Taiyi (lit. 'great 2nd Celestial stem') means "primordial unity of yin and yang" and Zhenren (lit. 'true person') is a Daoist term for "Perfected Person". According to the opening of the classical novel Fengshen Bang, he is the reincarnation of the first emperor of the Shang dynasty, Tang of Shang.