Sage of Humanity - Chapter 15 - 13?

The countries of Mephius and Garbera have been waging a war for ten years and are trying to put an end to this long fight through a political marriage between the two royal families. Orba, who was driven from his home because of the war and was forced to become a gladiator, looks exactly like the crown prince of Mephius, and it has been decided he will be substituting him during the wedding ceremony. On the other hand, Vileena, the princess of Garbera, has secretly decided to ensnare the crown prince for her own country’s interests.

There exists eight hardships of human life- living, aging, being sick, dying, resenting, parting with loved ones, being unable to let go, and being unable obtain something.

In each life, each person will experience their own hardship. Once they obtain happiness, they are furthermore unable to let go. Whether it would be heartfelt love or resenting someone down to the bone, would it matter? As long as that person’s bone has my name, it would be good.

- Description from Novelupdates

Demons are rampant, and monks regard strangeness as the way of heaven.

If a mortal wants to practice cultivation, he must dig out his eyes, cut off his limbs, and cut off the root of wisdom…

Ren Qing, who came through the journey, found that by virtue of his supernatural powers, he could be exempted from the cost of cultivation.

[No-eye method]: Through swallowing the eyes, one hundred and six immortal eyes grow all over the body.

【Poison Bone Technique】: Soak your own bones in poisonous water for thirty-six days, then re-implant them in your body, and train them to the point where no grass grows.

[Sutra of the Dead]: Seal Laogong, Yongquan, Shenmen, and Yintang points with rivets, and bury them in the ground for three years.

ps: There have been millions of finished novels “The Fifteen Years of Liaoning Zhai Fighting Iron”, welcome to follow up.

- Description from novelbuddy

In the grand weekend year, demons cause chaos, and people cannot live peacefully.Han Zheng, carrying the game setting he designed [Taotie Furnace], travels to this world. By sacrificing to the furnace, one can break through martial arts techniques.From [White Ape Extended Arm Fist] to [Ape Demon Nine Transformations].From [Vajra Fist] to [Great Vajra Ming King Seal] and then to [Great Mighty Dragon Bodhisattva View].From [True Martial Refinement] to [True Martial Holy Body] and then to [True Martial Indestructible Body]There are no gods in the world, hence demons run rampant, and evil spirits are everywhere.As Han Zheng kills his way through the chaotic world of demons, looking back, he has become the only true god in this world!