After Being an Improper Control Group as an Abandoned Wealthy Wife, She Effortlessly Came Out on Top - Chapter 283 - : You and I

Princess Leah wrote a suicide note ahead of her wedding.

A man who was once called the world’s strongest agent ended up becoming a teacher after his retirement, to train a new generation of agents. After many years of training his disciples, he was killed at the age of 60 by a secret organization’s ruse and was reincarnated in another world with his memories intact. Though he was surprised by the existence of magic and the strange species in that world, he quickly adapted to his condition as a newborn and took advantage of it. He acquired special magic and gained a massive amount of strength thanks to his rigorous discipline, in order to reach his goal: Resume his career as a teacher which he left halfway through in his previous life. This is the story of a man, who, based on the memories and the experiences of his previous life, became a teacher who travels through the world with his students.

Traversing into another world, Zhang Xuan finds himself becoming an honorable teacher.

Along with his transcension, a mysterious library appears in his mind.

As long as it is something he has seen, regardless of whether it is a human or an object, a book on its weaknesses will be automatically compiled in the library.

Thus, he becomes formidable.

“Emperor Zhuoyang, why do you detest wearing your underwear so much? As an emperor, can’t you pay a little more attention to your image?”

“Fairy Linglong, you can always look for me if you find yourself unable to sleep at night. I am skilled in lullabies!”

“And you, Demon Lord Qiankun! Can you cut down on the garlic? Are you trying to kill me with that stench?”

This is an incredible story about teachers and students, grooming and guiding the greatest experts in the world!

- Description from Novelupdates

Karsha, a general in the United States Army, was a loving father and husband who was accused of killing his wife and two children. As a result, he was sentenced to death. However, his life took a turn when a sinister being transmigrated his soul to a world of cultivation. He awakened as a slave and slowly rose through the ranks thanks to a strange system with its own agenda. He began walking the path of cultivation and immortality, which will soon drive him into a conspiracy so grand that his understanding of who he was, who he is, and who he is to become will be put into question.