Taiyang Zi is one of the recurring characters of I Shall Seal the Heavens.
Taiyang Zi, along with most of the Chosen of the Ninth Mountain and Sea, attacked Meng Hao to take the command medallion given to Meng Hao by Fang Xiufeng, which allows one to become a conclave disciple of the Ancient Daoist Rite Temple. He was the first among all the Chosen to be captured by Meng Hao.
Meng Hao trapped many of the Chosen into his bag of holding and had them write promissory notes to him, essentially extorting money from them. After giving Taiyang Zi a good beating, he finally agreed to sign the promissory note.
After Fang Xiufeng and Meng Li told him to release all the Chosen, Meng Hao reluctantly let them go.
Taiyang Zi reached 159,000 meters high into the air during the East Sun Ascension event, following closely behind Wang Mu at his 162,000 meters.
After Meng Hao reached True Immortal Ascension, he defeated Taiyang Zi and eight other Chosen, even after they all attacked together.
- His name literally reads as "Sun Child" or "Son of the Sun".