City of Sin (Yanyu Jiangnan) - Vol 7 Chapter 19

Huang Dan’s pain nerve is innately different from the ordinary people. A little tore in his skin can cause him to sweat all over his body painfully to the point of him unable to make a word out.

Somehow, he began to cross world, following Mr. System to do the tasks…

In the first world, Huang Dan realizes what it means to die painfully and to live to die again.

TL’s summary:
MC suddenly transmigrated and is bind to a system, requiring him to solve mysteries. Born with a higher degree of pain sensitivity, he met different people in the different worlds and learns what kind of emotion smiling is.

- Description from Novelupdates

Dr Dalton Wyatt, a world renowned Scientist and Inventor is transmigrated to the body of a high school student Dalton Wyatt who committed suicide due to unfortunate circumstances and complicated life.

In a supernatural world where secret forces are at play in the courts, Qi Xuansu, a seventh-rank Daoist priest, finds himself in a struggle to escape his fate as a pawn. The only way to do so is by completing missions and earning enough merit to buy back his freedom. But first, he must enhance his cultivation and climb the ranks of the Daoist Order. Follow Qi Xuansu as he unlocks his potential in his journey toward self-realization and liberation!

There is nothing in the world that cannot be solved by a transaction, if there is, then make a pure (ang) clean (zang) transaction.

If you say it, you may not believe it. The people who have traded with me are all over the world.

Trading is a great cause that is beneficial to physical and mental health and that people cannot refuse!

- Description from novelbuddy