Refining the Mountains and Rivers - Chapter 675A – Spatial Black Hole

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

[Cover] NOW HIRING — URGENT — Ghost Story Specialist Corporation Daydream Inc. (Ltd.) Insane Benefits – Come to Work Immediately ※ Note : The company is not liable for any injuries or fatalities that may occur during the course of the employee’s duties. —— A pop-up event for some ‘modern fantasy’ media I loved so much that I even took a precious day off work to attend. On that day, I ended up transmigrating as a character in that very fantasy world. As none other than a newly hired employee at a famous large corporation! A dream job with great benefits, an excellent salary, and even kind and competent bosses. I’m using the information I know about the world to rise through the ranks at lightning speed! Am I happy, you ask? Please, just let me go home. I’m begging you. ※ Note : The genre is horror.

Su Jie transmigrated to a world of xianxia. He did not have a spirit root and his martial arts talent was average. However, he discovered that he possessed the Spirit Imprint talent. As long as he placed his spirit imprint, be it plant or animal, they would become his clones!

When his clones trained, Su Jie himself would benefit. He could easily master a martial arts technique to completion or even the Immortal Martial Artist Plane that surpassed all limits!

[Demon Ape Vajra Punch]: By cultivating the Demon Ape Body of Vajra, his body was impenetrable and his strength was unparalleled. He could topple mountains with his Body of Vajra!

[Heavenly Silkworm]: The Heavenly Silkworm metamorphosed and broke out of its cocoon to become a butterfly. It transcended life and death, so it was undying and indestructible

[Demonic Prana of Dragons and Elephants]: After awakening the Demonic Prana, a divine martial arts technique, his power would be boundless. The sky changed color at his command and he could crush both the heavens and the earth.

Not only did Su Jie cultivate martial arts to an unprecedented plane, but even all his clones also became existences that were feared and adored by the world.

Demon Ape King, Lord of the Bohai Sea, the World Tree…all of them were his clones.

Su Jie declared, “You might still have a chance to survive if you defy the heavens. But you will never get a chance to live if you defy me.”

A tree of 10,000 flowers, the world is the door.
The spells change a lot, but the hearts of the people are unchanged.

- Description from Uukanshu translation