MTL - Invincible Leveling King - Chapter 8 Ending Zhangzhongshan (below)

Wang Yi gets a key, opening a door in 2022 will lead to 1982, and opening a door in 1982 will return to 2022.

Two very different great eras appeared before him:

Abundant dietary protection, developed industrial products, miraculous medicines, and explosive information, this is 2022.

Simple folk customs, rich wild resources, scattered antiques, and treasures of the age, this is 1982.

Traveling between these two eras, Wang Yi didn’t think much of it, he just wanted to live a good life.

- Description from novelbuddy

Meet Damon CrossAs a child, Damon Cross had to deal with the horrible realities of domestic violence and being homeless.He and his mother, who had always been there for him, struggled to find security.After losing his first backyard fight, When Damon gets a new MMA system, his luck changes dramatically.This mysterious system becomes his guide, improving his skills and raising him into the world of mixed martial arts.He learns more about mixed martial arts and gets better at it with the help of this system.With this renewed strength, Damon is determined to not only move up in the fight world, but also make a better future for both of them as a way to repay his mother for what she did.[YOU HAVE AWAKENED THE EMMAC SYSTEM][CONGRATULATIONS TO HOST FOR BECOMING A DOUBLE CHAMP]witness how Damon goes from a Bum to a Champ.Romance: YesFights: Yes

The most dependable (sarcastic) assassin -- Gao Xuan.Developing himself with an inventory of powerful gear. A master of biding his time, backstabbing, and brutalizing weaklings.Don’t love me. Nothing would come out of this.I am an assassin without feelings.

A supreme expert in the Immortal World had died, and a strand of his soul returned to its original body on Earth. Tang Xiu discovered with amazement that ten thousand years passed in the Immortal World, yet only a single year passed on Earth.

Ruthlessly betrayed by his lover and trusted friends, Tang Xiu found that his soul went back to his previous body on Earth, and, despite he spent 10,000 years in the Immortal World, just a year has passed on Earth and many things have changed. Having an unsurpassed knowledge, Tang Xiu will protect his loved ones and go back to the Immortal World to take his revenge.

- Description from Novelupdates