MTL - League of Legends: My Age - Chapter 494 end

A scientific genius named Thomas Harrier was transmigrated to an imperial prince body after a car accident that took his life. He found out that he is in a world similar to our own with a timeline akin to early twentieth century. The body that he is occupying was the imperial prince of a failing empire who suddenly rose to power after a successful assassination attempt of his father. Unaware that the attack is just the beginning of what is to come. He faces many challenges throughout. Will Thomas Harrier be able to live his second life in peace while running an empire and getting it back to its former glory? Or will he succumb into a conspiracy lurking within the country's borders?

Expect some:

Cold war era techs.

Super battleship with advanced electronics, propulsion, and fire control systems?
Helicopters?
Missiles?
Modern medicines and equipment?
AC-130?
A nuke?
Challenger or Abrams or Leopard?
F-4 Phantom or MIG-21?
Colored TV's.

Everything!!!

PS. Cover not mine, I just found it on google.

In a world of swords and magic, where Dragon Knights and Grand Archmages wield powers capable of destroying the heavens and shaking the seas, the legends of their prowess echo throughout the ages.In this world, Sylvus, having crossed over from another realm, opens the Eastern Elixir Shop with a unique system that grants him mastery over ancient elixirs.Within this humble shop, elixirs from the eternal archives of Xianxia are available—each more powerful and mysterious than the last.A Nine-Star Saint Archmage toils away in the shop, working to repay his debt.A Nine-Star Platinum Knight pleads with the shopkeeper, desperately hoping to buy just one elixir.Even God Mages and Divine Knights engage in fierce battles just to secure the coveted Nine-Transformation Golden Elixir before others.

Liu Ming, since he was young, lived in a savage prison named Savage Island where the prisoners aren’t controlled by any guard or security. When the island sinks due to “mysterious” events, only a handful of people survive – those survivors are then pursued by the government.

On the other hand at another place two practitioners are worrying about what will happen to them because the young master that they were supposed to protect had died.

Their young master looks nearly like our MC
What will happen?

- Description from Novelupdates

He became a teacher at the best magic academy in the empire.
….For being mistaken for someone else.