MTL - Invincible Exchange System - Chapter 39 Wu Meiqin's challenge

What a miracle! Who knew that one day an obscure village doctor would become the greatest doctor in the world?Ling Feng, who was merely a nameless doctor working in a widows’ village, broke his jade pendant by accident. The mysterious liquid flew into his palm and entered his body, making him untangle all the rare prescriptions documented in a legendary medical book and inherit the pharmacological knowledge from the ancient magical doctor.From that day on, his life became totally different. Li Yumei, the wife of his best friend, became a widow after her husband died of a mining disaster. Ling Feng supported her and her baby financially and protected them from debt collectors. With time going by, he was having a more and more intimate relationship with her. Wang Yan, a beautiful lady who lived in the village, got bitten by a snake. After Ling Feng helped her, she came to his room every night and had a tryst with him. Li Shiyun, the female village head, caught a kind of rare disease. Ling Feng used his medical skills to help cure her of the disease and save her life. Since then, she had owed him a favor. How was she going to pay it back? And what would happen to them in the future?

Jiang Hao passed through ordinary people and was forced to be sold into the Demon Sect and became a disciple of the Demon Sect.

I wanted to cultivate with peace of mind to become stronger a little bit so that I could survive in the world of self-cultivation, but was “humiliated” by a female devil in every possible way.

There is a huge disparity in strength, and he can only endure the humiliation and survive, hoping not to meet each other again.

Without a backer, he was favored by the Demon Sect’s headmaster and was able to practice with peace of mind. When he became the chief disciple and met the headmaster, he was stunned.

Looking at the beautiful face of the other party, he couldn’t smile a little. Isn’t this the female devil?

- Description from novelbuddy

Just before being summoned to another world, the protagonist’s summoning medium was secretly swapped by someone. As a result, he was not summoned as the “Holy King” but instead as the “Sex King.”The magic he can use includes water magic in the form of lotion, fire magic as candle wax, and his summoned beasts include a wooden horse used for punishment…Branded as “vulgar,” “useless,” and “filthy,” he is rejected, has his engagement annulled, and is ultimately exiled. However, the one who picks him up is a princess from a nation where the sex industry is legal.Using his modern knowledge, the protagonist begins rebuilding the nearly bankrupt sex kingdom. He introduces new fashion trends unknown to this medieval world and uses his authority as the Sex King to subjugate the girls. He then establishes modern sex service techniques.The protagonist's method of leveling up is through intimacy with his heroines (his concubine maids). The more intimate he gets, the stronger he becomes, and the wealthier the kingdom grows.However, the surrounding great powers will not stand idly by and allow a flourishing nation full of women. Thus, the flames of war are ignited.Utilizing his creativity, adaptability, and cunning, the protagonist repurposes his sex-related magic for military applications and overwhelms his enemies.As he gradually awakens to the path of conquest, he begins walking the road of a ruthless emperor. However, by his side is always a heroine, a celestial beauty who keeps his heart from straying too far…