Primordial Era: Nuwa is My Mother!

[Fantasy + Primordial Era + System + Time Travel]

Upon waking up, he found himself to be Nuwa's divinely ordained son, the strongest second-generation saint in the primordial world!

It also includes a selection system.

Hongjun preached, sitting alone on the lotus throne of a sage; Nuwa created humans, pretending to be the ancestor of the human race; the Three Pure Ones established their teachings, each wanting to be the senior disciple of the three sects of Humanity, Chan, and Jie...

From that day forward, the Three Realms of the Primordial World were never at peace again!