Young Master Is Being Jealous Again! - Chapter 14 - : Doubt is permissible, disrespect is not

The undisputed greatest doctor in Korea, Baek Gang Hyuk.

In a modern world where cultivators need a place to cultivate or vent their boredom, there are private businesses that set up instance dungeons with the aid of technology and cultivation magic to enable cultivators to train and commoners to experience the life of cultivation. They are called dungeon suppliers.
Xie Jin's one and only dream was to be a dungeon supplier and when his only relative passed away, the relative's inheritance gave him a plot of land and surprisingly, a 'System' Module which the relative had previously used.
With the help of the system, Xie Jin decided to pursue his dream of becoming the number one dungeon supplier.

After looking at a handsome man’s picture, he has transmigrated into another world. Rong Yi looked up at the sky, speechless. How unlucky could he be to have transmigrated into a loser + sissy’s body…

What’s worse, the original master of this body has been married to a man! And the worst thing is…

Rong Yi takes a deep breath and lowers his head to look at his chest! Flat! Check! Then he pulls open his pants and luckily see his ‘brother’ is still there, feeling much relieved…

He said to the little cute kid, “What did you say? Say it again.”

…

- Description from Novelupdates

Hiding in the Cold Palace and eventually becoming a Boss of Sorts. Li Mu was transported to a fantastical world and became a measly eunuch of the State of Xia. Despite having initially thought that his life would be a miserable one, he had unexpectedly acquired a check-in system.