Infinito: Salinlahi - Chapter 68

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.

The next morning, Jian Anning asked, “What is happiness?” Yu Xingxing hooked his lips into a smile and suddenly pulled her into a tight embrace. “Happiness,” he said, “is being with the one you love and doing things that make you happy. Let's continue, wife!” Jian Anning kicked him off. “Get lost!”

Xia Wan entered an ancient Mary Sue campus novel and became a cannon fodder female supporting role who had a marriage contract with the male protagonist F1.
F1 thinks she gets in the way because he likes the heroine.
Because F2 has a crush on the heroine, he thinks she is superfluous.
F3 finds her troublesome because she needs a female lead.
F4…I’m still working as an exchange student abroad, so I won’t be able to play for a while.
In order to avoid becoming a suspect in the future.
On the first day of transferring to this school, Xia Wan stood on the podium and introduced herself, “Hello everyone, I’m Xia Wan’s younger brother!”
*
The system told Xia Wan that there are two ways to live, to gain love or friendship from F4.
Xia Wan chose the latter without hesitation.
On the first day of disguising as a man, Xia Wan gave water to the grumpy F1, and a rainbow fart output touted his skills as a dog.
On the tenth day of disguising as a man, Xia Wan helped the gentle school god F2 avoid his crazy suitors.
Fifteen days when she disguised herself as a man, Xia Wan gave the dandy F3 sincere care and help.
…
When F4 returned to China, he found that the position that should have belonged to him had been replaced by someone.
And his three close brothers fought over who was Xia Wan’s best friend.
F4: ? ? ?
#Our F4 seems to be over#
Xia Wan:OAO
#What do you see me doing? I don’t know anything! #
Thanks for the cover @salt lemon.

【Reading Guide】
No CP in the text, single arrow for all staff, friendship to a happy ending
Fanwai 1v1 has a male protagonist.
For details, see the words in Chapter 1, which can be accepted and read again.

Content tags: Wearing books Women disguised as men
Search keywords: Protagonist: Xia Wan ┃ Supporting role: Who do you love ┃ Others:

- Description from novelbuddy

“I'm a monster? Why is every player I see trying to kill me?”------------Kai, a young man paralyzed by an incurable disease, decides to play the new VRMMORPG called Realms of Monsters in search of freedom and adventure. However, when he logs in for the first time, something unexpected happens.While everyone else chooses their class and race, Kai awakens in the middle of a forest... as a salamander.Luckily for him, he won't stay a salamander for long.[Mythical Evolution System activated.][Devour a monster to evolve.]Trapped in a monstrous form, Kai must navigate a hostile world where every player is a potential enemy. With the Mythical Evolution System, his survival hinges on his ability to evolve and grow stronger. In a game where everyone else is a hunter, can Kai rise from being the hunted to becoming the ultimate predator?