MTL - Boss’s Death Guide - Chapter 305 war

A man who was once called the world strongest agent ended up becoming a teacher after his retirement to train the new generation of agents. After many years of training his disciples, he is killed at the age of 60 by the ploy of a secret organization and was reincarnated in another world with all his past memories.Though he was surprised by the magic and the strange species of that world, he adapted very fast to his condition as a newborn and took advantage of it. He acquired special magic and gained a massive amount of strength thanks to his tight discipline in order to reach his goal: resume his career as a teacher which he left halfway through in his previous life.This is the story of a man who based on the memories and the experiences of his previous life, became a teacher who travels through the world with his new students.

He was weak, he was depressed, he was a loser.
He wasn't even Lvl 10 in the game when Earth was destroyed in the Quake and the players of Redlands were transmigrated to the fantastic world of Zushkenar.
But he lived, learned, and died again.
Now, he was back on Earth, one year and three months before the Quake.
Deciding to rejoin the game earlier and with greater focus, what changes would he bring with his actions?
What life would he live?

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paypal.me/JInDaoran

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There's a map for the lands of Zushkenar posted on the DeviantArt website:
https://www.deviantart.com/kilrain/art/Hunters-Guide-map-cities-grid-b-877682076

It's not complete, but it'll give an idea of the general geography.

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The background image for the cover is part of a landscape by moinzon taken from pixabay.com

This novel is also known as Gu Daoist Master

Humans are clever in tens of thousands of ways, Gu are the true refined essences of Heaven and Earth.

The Three Temples are unrighteous, the demon is reborn.

Former days are but an old dream, an identical name is made anew.

A story of a time traveler who keeps on being reborn.

A unique world that grows, cultivates, and uses Gu.

The Spring and Autumn Cicada, the Venomous Moonlight Gu, the Wine Insect, All-Encompassing Golden Light Insect, Slender Black Hair Gu, Gu of Hope…

And a great demon of the world that does exactly as his heart pleases!

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*Gu (蛊) referred to poisonous insects in various cultures in South China while in folklore Gu spirits could transform into all kinds of species.

- Description from Novelupdates

In the Holy Grail War, who holds the artifact and beats everything?

Gilgamesh! It’s yellow hair! It’s yellow hair!

In the face of catastrophe, who can stand up and save the world?

Kurosaki Ichigo! Uzumaki Naruto! It’s yellow hair! It’s yellow hair! It’s yellow hair!

In front of the heroine, who can counterattack, the bull-headed protagonist?

It’s yellow hair! It’s yellow hair!

Who is Huangmao?

I am Huangmao!

- Description from novelbuddy