MTL - Book of Technology - Chapter 440 do not understand

Jin, a hardcore gamer who still lives with his mom at the age of 24. He could never hold down a steady job since graduating, his girlfriend since high school dumped him for his best friend and he's constantly getting beat up by a group of local gang members. His dad left him and his mom when he became rich from the lottery and got a new family, one free of debt and burdens as he called it. His mom works 3 jobs to keep everything from falling apart, except for herself slowly. One day on his way home with the very first and new fully immersive VRMMORPG called Realm of Myths and Legends or RML for short, he died from a hit and run car accident. RML was advertised as the worlds first fully immersive VRMMORPG, allowing for players with skill sets in the real world, like sword training, martial arts, archery or reaction time, to benefit in the game itself! Though Jin died and at that moment a soul from another world crossed over into his body and inherited his memories. The man known as Izroth once hailed as the greatest cultivator in the seven realms, soul reincarnates into the modern world year 20xx in the body of Jin.

Kein Rosenguard, a reincarnated girl who suddenly became the crown princess's personal knight!

She fulfills her duties at the side of her highness, Princess Rosarie von Goldheart. A rebellious princess who would rather live her life as dressing as a commoner than attending fancy balls in the castle.

Kein decided she would spend her whole life protecting her Royal Highness but will she succeed in her mission and set aside her growing feelings for her?

Art is not mine! Only the story! Please tell me if you know the artist so I can credit them!

He is a ger who came from feudal times. His greatest wish is to have a piece of land that belongs to him, marry a hard-working man and have a lovely baby. Live a simple and warm life.

He is a major general of the Federation, cold, ruthless, frightening, aloof. It’s the label given by everyone who knows him.

However, the failure of a mission made the strong and cold him encounters the delicate and gentle him. People of two extreme personalities unexpectedly get along harmoniously.

The world says,

The reason why he is cold is that he gave all his tenderness to his little husband.

Only when his little husband is around him can he become approachable.

- Description from Novelupdates

Traveling through the big world that covers the sky, awakening the sign-in system, and rejecting the rich woman’s pursuit at the beginning! Sign in to get a pair of pupils!

Sign in at Daleiyin Temple and get a five-star reward Emperor Seal!

Sign in in the Bronze Immortal Hall and get a seven-star reward for inextinguishable profound art!

Sign in on God and get a ten-star reward Fortune Jade Plate!

The ancient warriors, step on the restricted area, control life and death, and control reincarnation!

The heavens and the world, the rolling red dust, have left his footprints!

The legend of Emperor Xuantian began when the Nine Dragons pulled a coffin on Mount Tai!

- Description from novelbuddy