One Piece: I'm Destined to Be the Son-in-Law King! - Chapter 55: Too Difficult? Then Don’t Do It!

At home, she was invisible; after marriage, she was a decorative vase; in the end, a sea of flames buried her, and not even her corpse remained. This is the portrait of Han Yuxi’s previous lifetime. Given a chance at rebirth, she strives to improve herself, wishing only to no longer serve as a foil or a pretty face. Then, she will seek out an exemplary husband and live a life of peace and prosperity. Alas, things turn out contrary to her wishes—she marries a man who bears a blood feud and hatred as deep as the sea. She turns the world upside-down, but her road to happiness is strewn with setbacks and the sweetness that comes after bitterness.

There were two daughters in Jiang Family. Each of them was as beautiful as flowers and jades.

Time had caught up with the famine season. One must be sold to survive.

Jiang Yun Zhu pulled the shorter stick and was taken away by a human broker.

Seven years later, Jiang Yun Zhu’s face was even brighter. She was dressed in rich clothes and surrounded by servants.

At this time, she was already the young madam of Marquis An Ping Manor. It went without saying, she was extremely honorable.

It turned out that the human broker sold her to Marquis An Ping Manor back then.

At this time, Jiang Yun Xiu’s face was battered by wind and frost. Every day, she worried about firewood and rice.

After receiving the brocade handed over by her elder sister, Jiang Yun Xiu gritted her teeth until blood came out. If she was the one who was taken away by the human broker…

Returning to the day of drawing lots, Jiang Yun Xiu snatched the short stick first. This time, she wanted to be the one above others.

Jiang Yun Zhu smilingly took the long stick. She thought it was so easy to go from a maid to the Young Madam of Marquis Manor?

Note: The wealth and honor in the heroine’s dream was earned by her own struggle, not by being sold.

Don’t get sold, live even better!

- Description from Novelupdates

Henry is a university graduate who happens to be working as a hotel receptionist, though with big dreams of being more than that. All these change for good one day when he finds a way of cracking a very sophisticated technological system, which ultimately empowers him to formulate and develop leading-edge inventions from his bedroom.With a determined mind not only to conquer the market but also to move out of his gray life, Henry starts into his journey of fame by introducing a number of radical technologies that capture the interest of the whole world and hold it.

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.