MTL - Demon Slayer: The Beginning of the Game Opens the Way of Reward for Diligence - Chapter 57

One day, Zhang Fan, a poor medical student, receives a medical system from the future. This turns him into a new shining star in the medical field. Along the way, he must face medical corruption, competition, and infighting from other doctors, and even find time for a love life as he strives for the top of the medical field!

- Description from Novelupdates

The Main Character, Watari Karito, is a veteran player of a Military Shooting VRMMORPG.

In the magical Yarran World, a group of extraordinary professionals ventured into dangerous places for knowledge, wealth, thrill, and honor, exploring secrets hidden in the depths of time. Coexisting with dangers, they were given a fitting name—adventurers.With so many adventurers around, there would be a few oddballs, of course. Take for instance, the swordsman who used to be a thirsty hedonist and now spent his days looking for ways to put his life in danger; the knight who saw gold coins as his ultimate pursuit; the schizophrenic and overly curious priest, and the genius mage who was prone to zoning out and could not care of himself. What kind of strange stories would these kooky individuals create when they came together?Alright, all the above are just nonsense. In truth, this is a casual story of an abnormal, unscrupulous middle-aged man and a few problematic girls undergoing self-therapy- I mean, seeking redemption.You have been solemnly warned that this story is purely fictional. If there is any glaring similarity, you probably need self-therapy too.

When he wakes up, Su Changkong has traveled to a world where troops are chaotic and demons are rampant, and his martial arts qualifications are mediocre, but Su Changkong found that as long as his [lifespan] increases, his talent and potential can be [infinitely] improved!

Wu Qin Xi: imitating tigers, deer, bears, apes, birds and other animals.

Turtle Breath True Dinggong: Imitation Qigong, like a thousand-year-old tortoise breathing, breathing, breathing and closing for a long time, prolonging life!

Celestial silkworm magic: nine transformations of the silkworm, breaking the cocoon into a butterfly, rejuvenating the old and rejuvenating, opening the door of life and death, every transformation is a rebirth!

Cultivation of health boxing, practice the Qi of longevity! There are many corpses on the road of longevity, and Su Changkong has embarked on a longevity martial arts where heaven and earth are destroyed but I am immortal!

- Description from novelbuddy