Both Confucianism and Taoism originated from the philosophy of the I Ching. They both followed the Tao of earth, but they diverged.
Huang argues that Confucianism and Taoism share a common root in the I Ching’s philosophy but diverge in their respective emphases on social completion versus thoroughgoing self-effacement.
, The Complete I Ching: The Definitive Translation, 1998thesis