A missing grandfather, a father in an accident, a mother forced to death, and only a broken him is left!

Jiang Fan's life had been unhappy ever since the misfortune at home, until he accidentally obtained a system that opened the passage to another world!

From then on, he embarked on a strange life of reselling goods between the two worlds, and the gears of fate began to turn!

He constantly obtains the items he needs from the two worlds and exchanges them for resources that can improve his strength!

As all the mysteries of the past are revealed one by one, the enemy is right in front of us, and new and old grudges are settled together!

Bullying me because I am weak? The moment I brought back the alien forces, they were all consumed by fear!

The whole world trembled!

Do you regret it now? It's too late!

……

Huh? So there are so many other worlds?

What is that? Orcs?

What is that? Zombies?

And what is this? Is it really that outrageous?

After waking up, Qin Yi traveled to a chaotic era of martial arts where all races were standing side by side and the human race was declining. He became a lower-class citizen without martial arts talent, suffering from liver cancer and only three months left to live. Just when he was desperate, he obtained a personal attribute panel and activated the talent of [Adaptive Cell Evolution]. As long as he was not killed instantly, he could adapt to the environment and evolve infinitely! Actively endure the burning of flames and evolve flame resistance and high temperature resistance! Drown and hold your breath for an hour to evolve anaerobic tolerance! Withstand the blood and qi of the fourth stage of warriors, the toughness of all cells in the body will increase by three levels, and the strength, physique, and blood and qi will increase comprehensively! Practice martial arts? What the hell is this! What doesn't kill me will only make me stronger!

Jiang Fan starts with a system, the first ability of which is to travel between different worlds and endlessly trade materials, becoming a big shot in both worlds! The mysteries of his grandfather's disappearance, his father's accident, and his mother's forced suicide are all revealed, and past scenes flash before his eyes. Whatever is owed to me, I will collect! Until the very end! Dark clouds cover the sun, a fierce wind rises—what has happened to this world?