Time-Traveling Crown Prince — Episode 1

Lysander, a modern man, becomes a prince in ancient times and uses his knowledge to change the fate of the Great Zhou. Betrayed and killed by the third prince Thaddeus, he wakes up before the very night and discovers a jade amulet that summons modern technology. He goes for a brutal power seizure, easily resolves the barbarian crisis using modern weapons, and finally ascends the throne.