Why the bug I wrote became a core gameplay mechanic?! - Chapter 596 - 579: New Main Quest Begins

No family, no power, no inheritance — a thrice-lacking protagonist. Just how will the seed rise up from the mud?

- Description from Novelupdates

When a gas tank exploded, Jian Qingqing transmigrated into the body of a little girl who had just died of starvation. Looking at the skinny, starving family living in a worn-down house that did little to shield them from the rainstorm outside, Jian Qingqing felt that she would soon die again. But she hadn’t expected her kitchen to follow her through time. Looking at the abundance of supplies in it, Jian Qingqing’s eyes lit up. Great! She wasn’t going to die this time!

Using the supplies in the kitchen, Jian Qingqing led her family as they opened up the land for farming and building houses. Unexpectedly, the high-yield grains led the entire country out of poverty. Everyone praised Miss Jian as a God that had descended to earth! She developed a method to process coarse salt into fine salt so that people could eat it with ease. The Emperor’s face was filled with tears as he said, “Miss Jian is really my lucky star!”

In the end, the whole world was unified and shouted, “All of this is due to Miss Jian’s hard work!”

Jian Qingqing said, “I just like to grow crops. I didn’t do anything!”

After her success, Jian Qingqing planned to find a nice, obedient husband to bring home. But what was up with the legendary prince who was ruthless, indifferent, and could stop children from crying? Why was he always appearing beside her?

Ming Zhiyan said, “I’m nice and obedient. Why don’t you marry me, Qingqing?”

Looking at the man who was clearly a wolf pretending to be an obedient dog, Jian Qingqing fell into deep thought.

In the foreign world, the martial artists dominate the world and the sword of the emperor controls the fate of hundreds of millions of lives! Long Yu, the number one killer on Earth, after dying, takes rebirth in this new world in an aristocratic family of martial artists but faces rejection because he is unable to practice martial arts.

- Description from Novelupdates

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.