One Piece: I am Imu - Chapter 12: The main ship of The Rocks Pirates

Chen Mu, a low-level officer, thought he could only live a cautious life, but unexpectedly he got a system panel that could accumulate experience, and he could master all the skills with just one practice.

[Blast Knife + Gale Knife + Wind Chasing Knife = Blast Artistic Concept]

[Jade skin grinding method + sand iron method + coarse salt method = skin of copper and steel]

A peerless martial saint with unparalleled swordsmanship, bronze skin and iron bones, and a body of pure gold was born step by step.

- Description from novelbuddy

Left disfigured after an unfortunate accident, Shen Lang, a doctor, has become so ugly that no one dares to look at him. This makes him decide to become a noble spirit instead and save lives along war-torn borders. He lives a lonely life, remaining single until a bomb takes his life.

At that fateful moment, he swears that if he can live again and get his handsome face back, he would use his charm to flirt with the most beautiful woman and live an extremely relaxed life.

He transmigrates to another world and in this life, he has the body of an absolutely handsome man. However, the said owner of this body is a live-in son-in-law, one who was chased out for being a useless moron, of a wealthy merchant.

In order to fulfill his goal of living an extremely relaxed life, Shen Lang finds his way to become the new son-in-law of the ‘Goddess’ of the much more influential Palace of the Earl. Yet the only way he can truly live a relaxed and enjoyable life is to eradicate all his enemies, and all those who seek to bring the Palace of the Earl down!

As a Beta, Ning An’s goal in life was to work hard, make money and get rich. However, his own dear father changed his aspiration and made him become a military academy student. Initially, he wanted to spend his days lazing about. What? The first place in the year gets a generous scholarship? Then staying up to study and train my body is nothing at all! The first place scholarship is definitely mine!

The A in the opposite dorm: So you’re actually an O.

Ning An: Ah?

The A in the opposite dorm: I know. You’re risking it all to prove that an O is not inferior to an A.

Ning An: You know my ass. Laozi is a B.

The A in the opposite dorm: You need to correctly recognise your own gender ah.

Ning An: …. Teacher. Report. I’m afraid this person is stupid.

note: Pretending to be a B’ is 装B (Zhuang B). 装B also means to boast or show off

- Description from Novelupdates

Yang Feng somehow transmigrated into a different world and received a legacy of an ‘ancient high tech’ family, which does not directly raise his power, but gives him the technology to build things which are way more advanced than the seemingly medieval world.