Warlock of Oceans: My Poseidon System - Chapter 7: Troll and New Class

Reincarnated into a land of cultivation, Yuan Zhou uses his Earth knowledge and assumptions to become a genius under the heavens for both business and cultivation. However, he walks the path of defiance, exceeding all rational cultivation bounds. His business ideas struggle against the stagnant culture that pervades the land, but the things he doesn't lack are his drive for immortality and power.

Wei Qiqi is the only successor of Wei Corps inheriting a hefty fortune. However, her stepmother bribed a witch from Thailand, harming her with two ancient witchcraft curses.

Yo, Hi! I’m Frank, I made a deal with a demon to pay me some money for receiving a guest for a few days every week.
I had no idea about what I have done.
On May 1st, Conan ‘the God of Death’ came to my house. I was forced to let him in and we get involved in a criminal case.
On May 8th, Bruce Wayne ‘Batman’ came to me. I was forced to follow him to fight crime.
On May 16th, Hannibal Lecter, The Silence of the Lambs, came to my home. I can only say that I really can’t stand my guests.

- Description from Novelupdates

During the summer vacation, sixteen nieces came to Luo Feng’s house to play together, but they couldn’t go back when the city was closed.

He silently calculated that the 16 nieces had to eat 16 catties of rice, 8 catties of meat and 20 eggs a day.

Total other consumption, need 3000 yuan per day.

Just when he was trembling, Uncle Shenhao’s system descended!

Just pet your niece to get rewards!

Explode the street with my niece, reward: an extended version of Rolls Royce.

Take your niece to the supermarket, reward: 30 million supermarket coupons.

Take your niece to eat out, reward: 100% shares in Dihao Hotel.

Teach my niece to write, reward: a house in the school district.

Book a movie theater for my niece, reward: shares in Yida Company!

Hold a luxurious birthday party for your niece, reward: the design drawing of the world’s strongest aircraft carrier!

With this system, I take my 16 nieces everywhere to eat, drink and have fun every day.

Accidentally, he became the richest man in the world…

- Description from novelbuddy