Harem of the Demon: Gathering Beauties in a Magic World - Chapter 6 - 0. Client Number 1

Xiao Ze, who was dedicated to the people and vowed to become a generation of Ming Jun, accidentally fell on a little lady.
The little lady was born beautiful and lovable.
So Xiao Ze accepted his life and got the name of fear.

ps:
①The male protagonist has no concubine, and he is dedicated to serving the country.

- Description from novelbuddy

A top-secret experimental explosion transports Xiao Ming to a parallel world resembling ancient times.In this hostile land, he is the most unfavored prince, given the most barren fiefdom.Fortunately, however, a mysterious item from the experiment—the Technology Crystal—comes with him, granting him the ability to upgrade a technology tree.Thus, he begins a leisurely life in his fief, farming and developing industry.In the face of his unfriendly brothers and sisters, he has always followed the motto- friends come and get wine, jackals come and get shotguns.

“Did you think healing me would make me love you more?” He scoffed grabbing my hair as he pulled me towards the door.“You're hurting me, Xavier,” I cried beating against him weakly. There was not much I could do.“If I ever see you an inch close to me,” He threw me against the wall “I'll damn the consequences and kill you,”.***My mate and I were destined to hate each other, only an act of true love or selflessness from the stronger mate could set our destines on the right path but for seven years, I had to put up with my mate's abuse and his supposed love of his life until one day I decided to leave.I left, determined to stay hidden from him forever... but I found out I was pregnant few weeks later.

Shao Xuan joins a friend in his expedition to a recently discovered archaeological cave. After he picks up an ordinary looking stone he is teleported to a different world and wakes up in the body of a small orphan child. The world he is in now is still in its stone age with primitive tools made of stone and the ways of the people are savage. Savage isn’t the only thing special about the people though, because they have superhuman strength, jump higher than trees and punch stones. In short, they are able to cultivate their bodies. Despite all this, it is a real struggle to survive because of the scarcity of food. Together with Caesar, his pet wolf, he tries to survive in this cruel world.

- Description from novelupdates