Merchant Crab - Chapter 53: Architect Crab

The genius pharmacist transmigrated into a pitiful farm girl’s body. Ignored by her own father, abused by her stepmother, and bullied by her stepbrothers. Her “twin” brother was given to distant relative and she went as the “extra” to live under someone else’s roof.

Luckily she possessed mad apothecary skills. Collecting herbs, plowing herb fields, formulating medicines and treating the ills, she refused to live an ordinary life as she slowly uncovered the truth of her real identify.

Inadvertently, she saved a dashing man who was in reality a big, bad wolf hiding under the skin of an innocent little puppy. He pulled out all his tricks: I have no other means to return your favor of saving my life. What say I repay you by marrying you?

- Description from Novelupdates

In the world of Norse mythology, a human boy falls in love with Waltraute, the fourth Valkyrie sister. He wishes to marry her, but Waltraute gives him an impossible challenge to deter him.

Nevertheless, the boy is determined to carry out the dangerous task and to marry Waltraute afterwards.

Jiang Feng, a handsome young martial artist, was injured during a misadventure and ended up being saved by the sisters Yaoyue and Lianxing of the Palace of Shifting Flowers, who were considered the most powerful female martial artists in the pugilistic world. The two sisters fell in love with Jiang Feng, but he spurned them because of their arrogance. Instead, he fell in love with their servant girl, Hua Yuenu.

Jiang Feng and Hua Yuenu were forced to flee from the Palace after Hua became pregnant with Jiang’s child. However, they ended up being betrayed by Jiang Feng’s servant, Jiang Biehe, and attacked by bandits. During their harrowing flight, Hua Yuenu gave birth to a pair of twin boys abut ended up dying together with Jiang Feng during a bandit attack. Yaoyue and Lianxing soon caught up with the couple only to find them dead. Refusing to forgive Jiang Feng for rejecting her love, Yaoyue vowed to take her revenge by making his two sons destroy each other. To do that, they adopted one of the boys as their own child and abandoned the other.

The other boy was soon saved by Yan Nantian, Jiang Feng’s sworn brother and one of the most powerful martial artists in the pugilistic world. Unaware of the first boy’s fate, Yan Nantian pursued Jiang Biehe into the Villains’ Valley, a place populated entirely by criminals. There, he encountered five of the notorious Ten Great Villains whom he defeated easily before falling into a trap set by them. The villains ended up torturing Yan Nantian till he fell unconscious, but chose not to harm the second boy, instead deciding to raise him as their apprentice in order to groom him into the greatest villain in history.

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.