MTL - Mystery Descends: My Exchanges Are Not Equal - Chapter 13 ,surprise! Great harvest!

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.

Dressed as [fantasy world] [patriarch], portray the fantasy world as realistic as possible from the perspective of the family, grow spiritual fields, raise spiritual fish, develop various family industries in an all-round way, support salted fish elders to become ancestors to serve as umbrellas, and inspire juniors to bravely venture The Holy Land Academy has come to the fore.

It is not a fantasy of passionate combat, but is based on the promotion of various family industries, capital, facilities, domestic servants, family generals, clansmen, guest officials, in-laws and other elements. Trying to see the “old-fashioned” fantasy world from a fresh perspective.

- Description from novelbuddy

Tang Zhixi is the illegitimate daughter of the Song family?

You grew up in the countryside and never went to school?

The Song family also claimed that they would never recognize her?

…

Until Tang Zhixi’s identity was uncovered, the Song family immediately prepared a banquet.

But Tang Zhixi directly refused, “Your Song family is also worthy?”

…

The third master in Dijing actually fell in love with a wild girl who had never even attended school.

I heard that I still hold it in the palm of my hand and pet it.

When the entire imperial capital was shocked, Ye Sanye said a word quite proudly: “My wife is not simple.”

…

Ye Hanzhi never believed in love at first sight until he met Tang Zhixi…

There are beauties in the north, who are all over the country and all over the city…

**

Tang Zhixi liked to wear skirts very much, and later… Ye Hanzhi’s shirt cuff buttons were all the color of her skirt.

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- Description from novelbuddy

Modern-day girl boss Vivian transmigrated into a modern romance novel as the male lead’s stepmother, the biological mother of the three antagonists… and the male lead’s father’s lover! She remembered that the fiancee of the male lead’s father almost died in a fire and had three sons, but all of them were killed because of the conflict against the male and female leads. Shivering from the creeps she felt, she decided to leave the male lead’s father.

It was the nineties and five years before the novel’s plots began. The male lead was not a big shot, and the female lead was not yet reincarnated. Also, as the villain, her eldest son was just fourteen and not fully corrupted… The two supporting villains were not born, and there was still hope. To shake off the outcome of death and to gain the ability to protect herself, Vivian packed her bags and fled in the night, using the advantage of her transmigration to accumulate wealth, recruiting and building a financial empire using the economic crisis.

When that was done, she did not forget her children’s education. Her eldest son was a mafia boss who is crazy and self-centered, her genius second daughter was anti-social, while her youngest son provoked problems everywhere… But she would straighten them out so that they became proper modern youths! Hence, her tempestuous eldest son with an inferiority complex became a networking specialist, her autistic and quiet second daughter became a pioneer in scientific research, and her provocateur youngest son became an international star!

While she was shedding tears and rejoicing over her children’s successes, that selfish and crazy man found her:

“Are they the children you had with me?”

Vivian snorted, “The sun is still up, and you’re dreaming up fantasies already?” Did he want to take her children from her? Dream on!