The Simple Life of Killing Demons - Chapter 28Book 12:

An extraterrestrial thing gives Chen Yizhe the ability to transform the microscopic world

Repair electronics?

To cure all diseases?

Modify DNA information?

Change the structure of water into gold?

Create new material?

- Description from novelbuddy

Martial arts and cultivation. Two different systems in a single world.

Fang Chen had reached the peak of power in the Grand Xia Empire. He was a mighty Qi Core Stage martial artist, and he led an army of 600 000. Yet he fell prey to the schemes of the Qingsong Empire, and he was defeated at Three World Mountain. His army fell; his vision was taken away from him; his sea qi was shattered, and he became nothing more than a cripple. In his final moment of clarity, a blazing sun and the figure of an immortal were burned into his mind.

The defeated general thus returned, only to face endless humiliation. However, something changed the day he was defeated—Fang Chen realized that his soul could leave his body and roam the world.

For five years, he endured mockery and insults. For five years, he observed everything going on around him without anyone knowing. Five years was neither a short nor long time, but it was enough for him to reach a state of enlightenment.

“Oh, there’s actually a fellow Daoist who received such enlightenment in such a small empire!” - Daoist Yun He, Central Continent Empire.

… Daoist Yun He raised his hand and sent a ray of spiritual light into Fang Chen’s forehead… Those memories constantly intertwined and gathered into a bright golden manual called the [Introduction to the Three Thousand Daos]

How will Fang Chen’s path change and what exciting adventure awaits? Follow Fang Chen in his path of cultivation to become an Immortal of the Nine Realms!

Official blurb:

The path to immortality is mysterious and strange, while humans remain insignificant. The hearts of immortals are as cold as frost. To them, all living beings are but little mayflies, frail and short-lived. Young Fang Chen stumbled upon this path of immortal ascension by chance. Even so, he had only one wish. With a divine sword in hand, Fang Chen wish to establish peace in the Nine Realms!

……………………………………………………………

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‘Is this… an interface?’

Despite having no knowledge of where he was, he was familiar with the system interface.

After all, it was oddly similar to the novel he closely followed.

But…

‘This doesn’t make any sense, I should have died already.’

—---------------------------

After a tragic accident, he found himself transmigrated inside one of his favorite novels.

He realized he was now Brandon Locke, an unfamiliar character, an extra.

Armed with knowledge about the future, Brandon now has to traverse this new world all on his own.

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【Nonsense】【No morals】【No routine】

…

The majestic world, nine heavens and ten earths.

In a colorful world, happy cultivating immortals.

When Chu Liang opened his eyes, he found that he had become a disciple of the Shushan School, and he was carrying a strange pagoda… Since then, he has embarked on an unimaginable road.

The thirty-sixth peak rises in the morning smoke, and the dragon is returned eight thousand miles away!

…

“My lord, please kill the demon!”

- Description from novelbuddy