Local Netizen Elf's Life In Another World - Case 244: Opposite ideals.

With the unexpectedly obtained unknown civilization technology, bionic robots, artificial intelligence, quantum mechanical transmission, supercomputers, plasma thrusters, nuclear fusion, these black technologies are constantly being manufactured in Wang Xiao’s hands.

Knowledge is power. With the help of unknown civilization technology, Wang Xiao, who has acquired this knowledge and black technology, has tickets to a better future and a sea of stars.

- Description from Qidian

Lou Yao Yao wasted her life fighting over a man, only to find out he wasn’t worth it in the end. Because of this man, she accidentally killed her rival in love, and even ruined the man who had always been watching over her.

Getting reborn as her 20 year old self, there is still time to fix everything. Lou Yao Yao decided to live as a genuine vicious woman. After getting her hands on the loyal like-a-dog man, she would show that cheating couple what pure loving affection looked like.

- Description from Novelupdates

The strong are lonesome. Overcoming the loneliness pushes you to stand invincible at the top.

Pro-disciple of the Shaolin Temple on earth, Huang Xiaolong was reborn into a Martial Spirit world, carrying Hua Xia’s secret knowledge, the Body Metamorphose Scripture. In a Martial Spirit world, only those with Martial Spirit are able to train in battle qi and become a warrior.

Huang Xiaolong born with a heaven-defying rare Martial Spirit was mistakenly taken for common variant Martial Spirit during the awakening ceremony conducted by the tribe and thus sidelined. However, Huang Xiaolong with his common “variant” Martial Spirit again, and again displayed unnatural talent, defeating geniuses, shocking the clan and the entire Martial Spirit World

- Description from novelupdates

This world is not reality, nor am I the protagonist.