I Accidentally Became A Superstar - Chapter 398: Neglected Old Man

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.

Augustus Cross was a man close to his 30s with nothing to his name. People rolled their eyes at the seemingly useless man and he remained helpless even as his daughter was at the brink of death.When all hope seemed lost, the hidden dragon within him was unleashed when the seal broke accidentally as his birthmark was stained with his own blood. Knowledge of ancient arts filled his subconscious, granting him powers to cure his daughter and other incurable illnesses.A man who was once looked down by everyone is unstoppable now. What lies beyond this man with the power he now possesses?

Shiao Yi is an 18 years old boy from a war-torn future, he is badly injured while escaping his enemies and wakes up in a strange, old-fashioned world with no technology—only magic, swords, and monsters.He’s saved by a kind but mysterious knight named Dominic and taken to a stone fortress where people think he’s just a lost child.As he heals and tries to hide who he really is, Shiao Yi slowly realizes he may have ended up in another world.With no idea how he got there or if he can ever return, he must learn to survive, understand magic, and figure out if this strange new place could be his chance to live a real life—for the first time ever.

As a house servant, Gu An accidentally shattered a jar of Spirit Flowers in his youth, and in his panic, he discovered that he had seized twelve years of life span!A path to immortality thus unfolded before Gu An's eyes!In order to cultivate in peace, Gu An chose to become a Servant Disciple of the Supreme Sect, planting medicinal herbs daily to cultivate by seizing the life span of these herbs.Through the evolution of life span, his Basic Skill constantly evolved, deducing from Basic Sorcery to reach Divine Skills that connected to heaven!Eras changed, constellations shifted, and the Mortal World transformed vastly.Gradually, legends of immortals emerged in the Mortal World.The immortal known as Gu An expended half of his life span, helping his Cultivation Level break through the limits of the Immortal Path and achieving the realm of a Saint, soaring above the heavenly laws.However, one day, a white-robed old man with a saintly presence came to visit Gu An.“I am Xuan Qing from the Heavenly Stars above, appointed by the Heavenly Emperor Tai Hao. Hearing of Daoist Friend's numerous benevolent deeds in the Mortal World and your countless rescues of the living beings here, the merits are immeasurable. Thus, I have been dispatched from the Lower Realm to invite Daoist Friend to join the ranks of the immortals, to take up an immortal office, the Divine Steed Celestial Official.”“May I ask what the duties of the Divine Steed Celestial Official are?”“In the Heavenly Court, there are divine steeds that can traverse earth and heaven and penetrate Yin Yang. The Divine Steed Celestial Official is responsible for looking after and feeding these divine steeds.”Huh? Taking care of horses? Groom?!