Rebirth: I Became Mr.President's Beloved - Chapter 51 - Invited for Tea

Li Che had transmigrated and, after living nineteen ordinary years, he opted to accept his fate, marrying and having children, striving to support his family.But the moment his daughter was born....Through his daughter, he rose in status, and his life was no longer ordinary....With his daughter’s safe birth, you gained a Dao Fruit, “Immortal Artisan”.When his daughter turned one, safe and sound, you gained the Dao Fruit “Dragon Elephant Vajra”.At his daughter's age of two, free from illness and disaster, he gained a Dao Fruit, “Pure Heart”.By the time his daughter was three, lively and clever, he gained a Dao Fruit, “Chess Saint”.His daughter was four, five, six years old.......Li Che discovered that with each passing year of his daughter’s age, he could condense a Dao Fruit to enhance himself.From then on, Li Che harbored a simple and unpretentious wish.A Dao Fruit a year, quietly safeguarding longevity.As a father, he only wished...Starting from the warmth of his wife and child by the hearth, to peacefully protect his daughter's immortality.Silently condensing countless Dao Fruits.Henceforth cultivating his spirit, invincible between heaven and earth.

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.

From the age of 7, Qiao Qiao realised that her family wasn’t quite the same as her friends’ families.

Her father, dressed in all white, said, “Our girl should learn to cultivate immortality with me!”

Her mother, dressed in battle armor, said, “Our girl should train her body to protect herself!”

When discussing it, they decided to solve it with a duel outside.

Her brother secretly asked, “Qiao Qiao, do you want to be in the entertainment industry with me?”

Then, her brother was kicked out of the house by her parents. She prayed that he was okay out there. 

Qiao Qiao sighed. She was really worried about this family.

She silently collected mech building materials. There was no other way, if she learned how to use mechs, she would be able to get a good job. Unfortunately, her unreliable parents didn’t understand.

It seems like the burden of supporting this family was handed over to her.

- Description from Novelupdates

Ren Zhouyuan, who loves to study Chinese culture since childhood, has never imagined that his own life would one day be subverted by a foreigner.

Not only do these foreign devils not love the Chinese, but they also scoff at him, looking at his eyes like watching a fool.

After getting drunk, Ren Zhouyuan is for no reason pregnant with a ball, and actually gave birth to a child as a man. This kid is blonde; almost do not have to verify who he is from the “handwriting.”

Ren Zhouyuan does not want to make that arrogant foreigner part of his life, but after fate tied them tightly together again, he found that there was a big difference between this man and the arrogant fighting nationality he imagined.

Leonid: Honey, what does ” Jijiwai Wai*” mean?
Ren Zhouyuan: Refers to people like you
Leonid: But I’m not chirping ah …

- Description from Novelupdates