MTL - I Became the Ancestor of the Villain - Chapter 617 big change

Ask, under the starry sky there was a beauty, her black hair like eternal night, bright eyes sparkling like stars, her powerful magic made the world tremble, her supreme beauty made all creatures submit, who was this beauty? “That’s right, it’s me, the Witch King, Dorothy!” ‍

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

One day, I randomly stumbled upon a gacha! When I tried using it, it turned out that it was an unbelievable gacha that granted special skills!

Following our protagonist, who threw his whole paycheck at it, the world gradually started moving towards an unbelievable direction.

This is a story about a man attaining peerless power and dragging the whole world in the process.

The whole world is subjected to a highly dangerous standardised exam called the Global University Entrance Examination. Answering questions by putting their lives at stake, they would live if they passed the test. Every month the exam will undergo reformation while, occasionally, it is random.

- Description from Novelupdates