Steel, Guns, and the Industrial Party in Another World - Chapter 333:

Cho Ryu Hyang was good at math from a young age. When he enrolled into the The Theoretical Maths and Martial Arts School, the teacher, Jo Gi Chun, recognized Cho Ryu Hyang’s talent immediately and took him in.

What happens when a history teacher dies and becomes a prince in another world? Of course, he becomes the greatest emperor!He will use all of his family's resources for his own benefit, conquer the world, and... beautiful women! Ahem. This is a novel full of intrigue where he will get what he wants, build his own empire, and finally protect his loved ones.He is a great leader to those he cares about, but a ruthless tyrant to his enemies. In this world of magic and mystery, he will not stop until he reaches the top.But what will he have to sacrifice for victory?

Cosplayer Liu Mang accidentally crosses through time and arrived at the Eastern Han Dynasty wearing Aries Gold Cloth. (Saint Seiya!) He arrived on top of the walls of XiaPi right when it was about to fall to Cao Cao.

Previously one of the ten greatest Martial Emperor, Gu Feiyang somehow died near the mountains of Heaven Wave.

Fifteen years later, Gu Feiyang crossed through the cycle of rebirth. He was back! But this time, he was in the body of Li Yunxiao. Since then, Li Yunxiao started a treacherous journey. The world is in turmoil once more!

- Description from Novelupdates