My Angel system - Chapter 1 A Brown Book

One day, Song Shuhang was suddenly added to a chat group with many seniors that suffered from chuuni disease. The people inside the group would call each other ‘Fellow Daoist’ and had all different kinds of titles: Palace Master, Cave Lord, True Monarch, Immortal Master, etc. And even the pet of the founder of the group that had run away from home was called ‘monster dog’. They would talk all day about pill refining, exploring ancient ruins, or share their experience on techniques.

However, after lurking inside the group for a while, he discovered that not all was what it seemed…

- Description from Novelupdates

Oscar, a destitute young boy, died in a tragic accident and was reborn in the forgotten realm. As a member of the lowly Birch tribe, his solace comes from the fragments of a guardian's spirit, residing in his soul. After the decimation of his family in the hands of a powerful race known as the dreads, he embarked on the part of revenge, leading him to the path of transcendence.

Chen Feng, of modern earth, had suffered bad luck since birth. After finding the legendary “lucky artifact,” his bad luck peaked and he became the only person killed in an earthquake. By a twist of fate, he found himself transmigrated into a different and magical world! A world much larger than earth. A world only partially explored due to the dangers within. A world where human civilization centered around genes. In this world, human beings possessed all sorts of abilities due to genetic fusion. Some went on to create world-changing technologies with their mysterious genetic abilities, while others went on to become undefeated genetic warriors with their combat genetic abilities. How will Chen Feng fare in this new world?

A lecherous army special task force soldier from 21st-century Hong Kong is selected to travel back in time, choosing to go to the Chinese Warring States Period. Unfortunately, the time machine runs into an error during the experiment. With no foreseeable way to return to the present, he must use his combat skills and knowledge of history to thrive in his new life in the year 251 BC.