MTL - Medical Sovereign - ~ Chapter 63

In the middle of a deserted island, a small boy wakes up with two sets of memories: one from his few years of life and the other from a man who lived to adulthood and achieved great things. When he least expected it, a powerful master appeared on the island and took him in as a disciple, revealing a shocking fact: magic exists in that world, and, thanks to it, humanity managed to conquer the galaxy.

On the brink of destruction, I regained consciousness and found myself back in the past, 20 years ago. In order to have a peaceful retirement, I must prevent the impending doom.

After traversing through time, Li Xuan was delighted to have become the second son of Earl Chengyi's mansion, as well as a proud warrior of Liudao Fumo. However, just ten days into his privileged life, he faced fierce female supervisors, terrifying ghost-girls, and spiteful demonesses one after another.Amidst this whirlpool of challenges, Li Xuan claimed he didn't feel a bit panicked. A few years later, standing above the Yangtze River, he swung his sword, and with that, thousands of miles of landscapes were instantly frozen.Where will the demoness escape to? Take my sword!

A good-for-nothing man married a beautiful girl but was kicked off the bed on the wedding night. Furiously, he wrote a bill of divorce and ran away.
He was schemed a car accident in which he nearly lost his life. However, it turned out to be a blessing. He swallowed the soul that passed through the outer world, thus obtained superb medical skills and martial arts.
Later on, with the silver needles and invincible martial arts, he embarked on the road of counterattacks and was committed to his great dreams.

- Description from Novelupdates