MTL - Aztec Eternals - Chapter 759 letter from the kingdom

A teenager named Evan Mason was reincarnated into the magical world of Harry Potter and goes to school at Hogwarts!
With only his knowledge of the future and great talent for magic, he takes the path towards the top of the magic world, only to realize that ever step he took, changed everything!

- Description from Novelupdates

This novel is also known as Almighty Video Game Designer

Chen Mo a game designer got sent to a parallel world with advance technology but undeveloped game concepts.

Watch as he redefines the world’s gaming industry with the games he remade from his old world.

- Description from Novelupdates

Due to investigating an arms case, he was forced to become a gigolo, from then on, the cute little loli, the sweet and pure young married woman, the cold and aloof CEO beauty, and all kinds of other beauties surrounded him.

On June 6th of the fifth year of the Great Wilderness, it was the fifth year since Yang Xu came to the ancient wilderness, he established the Daxu Kingdom in the wilderness and proclaimed himself king.

The country has one city, three towns, and nine thousand people.

Among the people are the fox clan in Qingqiu, the mermaid people in the East China Sea, and the blue bird clan.

The fox family is good at illusion, the mermaid can control the water, and the blue bird soars nine days.

Not long after the founding of the country, the Yuren found a lifeboat in the northwest waters of the Daxu Kingdom, and captured six human races, talking to themselves as American federalists.

Yang Xu:? ? ?

Come on, I have already established a country, you said that I am still on the earth and have not traveled through time?

- Description from novelbuddy