Dear Mr. Shi - Chapter 4, Qinghuan, such a name that sparks infinite imagination.

The Ye family’s foolish girl is reborn one day!With an omnipotent divine cauldron and a spiritual space in hand, she is no longer the good-for-nothing, abandoned girl that everyone bullies at sight!She is so invincible with both medicine and poison that even a divine doctor will be nothing beside her, Spiritual beasts beg her to make contracts… Oops, excuse her, even the Beast God calls her Boss.When her scumbag father dares to abandon his wife and daughter, she wrecks and destroys his family.When people dare to bully or humiliate her, she would return that favor a hundred times greater.Reincarnated as a human once more, she returns like a powerful sovereign. However, she never expects to be involved with the devilish and bloodthirsty him.Originally meant to be a decisive Ghost King, he ends up reincarnated into a ditsy, cute and harmless hostage prince in a neighboring rival nation…

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.

In the far future humanity is threatened by monstrous beings called kaiju now humans have expanded across the galaxy with the development of new techniques and fleets of mechs.Alto a young boy with dreams of becoming a great mech pilot is forced to be a mech designer. He finds a strange technology that opens his eyes to the vast secrets of the galaxy, now with a new purpose Alto must become something the world has never seen before.A/N: Just wanna do a good sci-fi book

The Six Prefectures of Zhongbo were ceded away in surrender to the external enemies, and Shen Zechuan was taken into custody in the capital, reduced to *a drowning dog loathed and condemned by all. Xiao Chiye followed the scent of the furor and made his way over. But instead of setting others on him, he kicked Shen Zechuan with his very own leg that rendered the latter an invalid. Who would expect this invalid to turn around and bite him in a counterattack until he was all drenched in blood? That was the start of an epic feud between both men who tear at each other every time they come face-to-face with one another.

“Fate wants to bind me here for life, but this is not the path I choose. The yellow dust engulfed my closest kin whole. I have no wish to bow in submission to an illusory fate. The imperial edict couldn’t save my troops, and the imperial court couldn’t fill the stomachs of my mounts. I’m no longer willing to lay down my life for them all. I want to conquer that insurmountable peak. I am going to fight for myself.”

1v1, HE, HE, HE.

◆ Main Couple: Xiao Chiye (gong) x Shen Zechuan (shou)
◆ There’s a yuri cp that are both important characters.
◆ Gong is even more of a scoundrel than the various gege in the author’s earlier novels.

Note: a drowning dog is someone who is down and out having lost favor or power.

- Description from Novelupdates