The Taiyi Immortal Sect is one of the Nine Great Immortal Sects.
In Chen Fan's previous life, They collaborated with Han Jin and Yang Fan to kill Fang Qiong.
After learning that Chen Fan was in the Central Galaxy World, Yang Fan notes that it was time for the sect to sow the seeds of discord with the True Martial Immortal Sect. After his death at the hands of Chen Fan, the sect allied with the remnants of the Five Elements Immortal Sect and declared war against the True Martial Immortal Sect, with the main objective being to kill Chen Fan.