[Original world with the background of spiritual revival] + [System] + [Non-time travel] + [No card-playing plot]

A hundred years ago, spiritual energy revived and countless space gates appeared all over the world. People called them Lingxu, which is the abbreviation of ruins full of spiritual energy.

As the protagonist, Chang Wantang obtained the Duel King System at the age of six and became the most unique existence in the world.

Twelve years later, he brought his Black Magician deck and became stronger together with his companions, unlocking cards such as Red-Eyes Dragon Knight, Hades of the Closed World, and Sphere of the Sun God, and stood at the top of the strong step by step.

[Harry Potter fan fiction + professor writing + education reform + layout + make up for regrets after the main story begins]

[Slowly warming up! There are new education reforms every year]

Sebastian Swann, an outstanding graduate of Slytherin, heir of an ancient alchemy family, and the richest man in the wizarding world. 12 years after graduation, he returned to Hogwarts as a professor...

Snape: "Sebastian, what made our richest man choose to be a little professor at Hogwarts?"

Sebastian: "To make Slytherin great again!"

Snape: "Tell the truth..."

Sebastian: "To make Hogwarts great again! ... Put away the truth serum, Severus, you are such a bore!"

Snape: "Tell the truth!!!"

Sebastian: "It's all true, except... I still want to make wizards great again!!!"

......

ps：

1. The protagonist graduated from Slytherin, is Snape's friend, and is not very friendly to the deer dog

2. The original female protagonist (a tool person) has no sweet love. The male protagonist is focused on his career and has no children for the time being.

3. Focus on Slytherin's shrewdness and ambition, not bloodline

4. Contains two settings

5. The timeline begins in the second year of the Weasley twins, one year before Harry and the other two enter school.

6. Lightning avoidance: This is the White Lord!!! Not the Dark Lord!