I Raised A Black Dragon (Web Novel) - Chapter 217

The protagonist of the collapse of the three former civilizations is Dr. Mei. What is the end of logic, the strongest brain, super intelligence, this is the story of the strongest scientist of Honkai with knowledge of the moon becoming the god of science!

- Description from novelbuddy

Summary Version 1:

The mysterious boy Ling Chen is saved by a little girl as he lay on the street dying. Years later, he strikes a deal to save this savior-turned sister and enters the virtual world. In a future Earth where advanced warfare has forced nations to settle issues virtually or else suffer the consequences, Ling Chen bursts into the scene and goes from unknown to legend. Yet all is not as it seems, for Ling Chen has a dark past, and there is a greater mystery at hand behind this virtual world.

Summary Version 2:

To save his terminally ill little sister, Ling Chen enters the newly released virtual game world and joins a small gaming studio comprising entirely of women. From now on walking upon his path towards the pinnacle. An ancient, evil item almost forgotten by history, the “Lunar Scourge” helps forge his unsurpassable legend, and causes him to unknowingly step upon a path that is destined to be punished by the heavens, the way of the shura.

Chu Chen, who used to be an ordinary university student from a common family, gets a peculiar system installed in his head one day.The system makes him capable of obtaining all kinds of valuable properties as long as he finishes the various check-in missions it sends out.What's more, a Good-Luck card in his possession brings him enormous luck, allowing him to solve whatever trouble that comes his way with almost no difficulties. Due to his abundant wealth and attractive appearance, Chu Chen receives great attention from the public and the admiration of dozens of pretty girls.But Chu Chen is, after all, a man with honesty and integrity, so with his money and luck, he helps his friends in need and punishes wrongdoers. With all kinds of different character perspectives and situations.This story vividly portrays the realistic and materialistic sides of people as well as the convenience and power of a rich man.-----This book is also known as “Why Am I So Handsome, Still So Rich, You Are So Ugly, Still So Poor”, “Being the Rich Man is Too Hard, I Don't Want to Be One Day”, and “Becoming the Rich Man from Sign in”

Violet skies, a world undergoing massive changes, a deficient moon, interlinking voids…
When the world experienced a cataclysmic event,the majority of living things ceased to exist. Although humanity survived by hiding in the last safe zones, humans had to face mutated dire beasts and colossal source beasts that could break through the space barrier and enter the earth at any second.
Luo Yunyang, a young man who grew up in those calamitous times, obtained an attribute regulator and set out to walk the path of supremacy!

- Description from novelupdates