The Strongest System - Chapter 1: Let Me Level Up

He is very cold and passionate, Mu Yanwang, who means what he says. He has always regarded women as dirt but she, he has only spoiled her.

One day, Zhang Fan, a poor medical student, receives a medical system from the future. This turns him into a new shining star in the medical field. Along the way, he must face medical corruption, competition, and infighting from other doctors, and even find time for a love life as he strives for the top of the medical field!

- Description from Novelupdates

He was the CEO of the Mu’s Group. He had a respectable status and a domineering attitude. His biggest weakness was that he doted on his daughter. For his precious daughter, he came to her and signed a contract for her to be his daughter’s nanny. She thought it would be fine to stick to the contract, but he interfered more and more with her, driving away every man around her without leaving a trace, locking her in his arms, saying to her affectionately and tyrannically, “We should give a companion to our daughter.”

500 years ago, Chen Xi was devoured by a crack in the void and was transported into a cultivation world.

500 years later, he returned back to Earth after enduring through several hardships and discovered that only 5 years had gone by.

…

In the courtyard, beauty at the side, a candle flame wavering.

A gush of clear wind, half a full moon, the peach tree remains unchanging.

…

Wait, whose kid is this?! Why is she calling me papa? Gazing at the little girl in front of him with skin as pale as jade, Chen Xi froze.

…

　
Returning home from cultivation, starting as a stay-at-home dad.

In this life, not fighting to be a king nor claiming to be a tyrant, only praying to peacefully be a wife-pampering mad devil and a child-protecting daddy!

- Description from Novelupdates