MTL - 80’s Sweet Marriage: Struggle for a Good Life - ~ The first section is the class of Wu Sanjiao, the class teacher.

A detective travels across the United States and becomes an agent of the Los Angeles Police Department.

After getting through the initial confusion, he repeatedly solved strange cases, became famous all over the world, and was called the most legendary detective in history…

- Description from novelbuddy

I am Ye Qing. Lucky I found a [Monster Factory] application.

This bunch of super strong monsters are individually comparable to over 100 human beings, and they bring all kinds of skills!

Efficiency? With the skill processing speed +300, you still want to compete?

Precision? *cough, cough* Bring me that legendary dial caliper, let’s show them what absolute precision really mean.

Ye Qing: When, us, men want to be successful, we pull out our wallets.

Monsters: Don’t play those malice games with us. The creation of ultimate machinery is our love and life. These impenetrable bodies are our tools of the trade.

A 20 meter tall, overly buffed, savage looking monsters hold on to a ultimate cutting machine and yelled at the sky: “I am not targeting anyone specifically! Rather I am telling you all that, everything, in front of me and my tools are, nothing, but TRASH!”

- Description from Novelupdates

I found myself possessing the body of a young master who everyone was eager to kill. I’m invincible, so let them try to kill me. It’s only for one second, though.

With a marriage contract forcefully done, he married her, and all she could do was comply, and resent him deeply for that and for all the following misunderstandings they faced.
However, it was already too late when she understood she actually loved him.