MTL - The Holy Lord In the Comic World - Chapter 330 : Suspected of golden bling?

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

After getting hit by a truck in an attempt to chase down his brother's bullies, Alex in transmigrated into the body of a weak mage in a fantasy world called Eldora.As expected, transmigration can never be complete without a golden finger! Shortly after waking up in his new body, Alex awakens the almighty path system.But that wasn't all, a more shocking discovery almost blew Alex's mind away.....System is crashing!! System is crashing!! System is crashing!!!![Due to the system breaking down, several perimeters of the system have been broken. Required exp for leveling up is now fixed, repeatable missions no longer have limits and can be completed continuously even when capped. Penalty function disabled, rewards for missions are now fixed].......Alex's system got broken and a lot of functions stopped working but this was a good thing because Alex can now level up continuously without anything to slow him down.......Armed with such a system, join Alex as he journeys to become the strongest mage in this new world and what his reaction would be after finding out the secret of his system and why it had broken!!

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

A Speedster in a Fantasy World