MTL - Restart the Protagonist’s Way of Survival - Chapter 63 learned that

Qin Zheng transmigrated into the role of the Princess Consort, but Qin Zheng, an engineer dispatched to a foreign country, didn’t get the script for a palace drama, nor did she have the chance to experience the luxurious life of a Princess Consort. Because, the nation had perished. A eunuch held three feet of white silk and said, “Your Highness, the city has fallen. Please leave with dignity.” Qin Zheng: “…” What kind of beginning was this? In order to avoid being forced to commit su*cide, Qin Zheng had no choice but to go to the bed of her half-dead husband, the Crown Prince, and pretend to be deeply affectionate, shedding a few tears to delay time. Emperor Chu Chengji, founder of the Great Chu Dynasty, was valiant and skilled in warfare. He conquered the northern barbarians and drove out the southern savages, ushering in the prosperous era of Xuan Chu. He spent his entire life in battles, without a wife or concubines. Consequently, after his premature death, only a young scion from a collateral branch was selected to succeed him. He departed during the peak of his prosperous reign, only to open his eyes and find himself at the time of his nation’s demise! He was reincarnated as the current Crown Prince, his own nephew of many generations. Learning that the territory he had opened up in the past was directly lost, the Emperor of the founding dynasty couldn’t help but laugh in exasperation. How useless were these descendants? Back then, he could establish this long-standing empire single-handedly, and today, he could rebuild it! As for this stunningly beautiful Princess Consort, who cried so pitifully in front of him, the Emperor of the founding dynasty was extremely disdainful: “Women would only hinder his speed of restoration!” Later, the Emperor of the founding dynasty would knock on the door of the Pepper Room every night and ask, “Azhen, can I come back to sleep?”

Liang Ning had just bid farewell to her eldest and second eldest brothers who died on the battlefield, never expecting that when she was preparing to fulfill a marriage contract with an orphan she saved six years ago, she would be burned alive by him!Upon waking, she became Miss Fu of the Fu Family, and her murderer had already risen to a high position, surrounded by beautiful wives and concubines, becoming a trusted minister before the emperor...No fear!Miss Liang of the Liang Family changes lanes, still the decisive and ruthless Rashamon!But why does that brat, who used to play around with her nephew and knew nothing about respecting elders, keep pestering her?

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.

He Yuan had accidentally caused his own death. He had no idea he was even dead until he suddenly woke up on the hard floor of an empty room.

As he tried to get his bearings right, a strange guy suddenly popped out of thin air and he was offered a job.

The job offer granted him eternal life with the alternative being reincarnation. Most would hastily choose to be reincarnated so they can start a new life but not He Yuan.

He was skeptical, why would anyone want reincarnation? Once you reincarnated 'you' cease to exist. He didn't care about what people said about starting afresh, gaining new memories and all that.

All he knew was that once a person reincarnated, they get thrown into a different environment, different family, meet new people and in short became a different person entirely.

What scared He Yuan the most was losing his own thoughts and hence, awareness of his current self and so, he chose to accept the job.

What did the job entail? He carried out tasks given to him by people who were called 'leasers.' They were called this because they leased out their bodies to 'taskers' for a period of time to help set their crooked lives straight.

What the leasers didn't know was that the taskers got into realms and helped them so they( taskers) could focus on their own main tasks which was world/realm balance.

These realms had 'special ones' who siphoned the luck out of it. Luck was the binding force of these realms so without it, the realms would begin to break apart and deteriorate into unlivable hells.

So in essence, leasers gave put their bodies and 'payment' in the form of soul energy, taskers helped out the leasers while balancing the realms and the realms become stable once more.

Pretty straightforward right? Yes.

But can someone tell He Yuan why these world was so full of hypocrites, Mary sue and Gary stu characters who thought it was excusable to do horrible things just because they were in love?

He Yuan grit his teeth. If you want to be in love, then be in love, was there any need to use others as stepping stones?!

He rolled up his sleeves and bounced forward. Just you wait as I teach you all a valuable lesson!