[Cruel and even more ruthless + no female protagonist + English gentleman + cool]

Dumbledore never imagined that a letter of acceptance to Hogwarts would lead to him becoming an arms chief.

That was the 11-year-old boy named Alan Shelby.

That's the only arms dealer in Munich!

There is one more person in the world who is hunting down Voldemort all over the world.

There is one more person in the world who is trafficking arms all over the world.

But that doesn't matter.

The most important thing is Harry! (gritting his teeth in anger)

Harry: Ron! This thing is much better than a wand!

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There is no female lead, the introduction is weak, please move on to the main text.

The whispers of the old gods enveloped the entire continent, potions flowed quietly in dark alleys, and the shadow of a dragon passed over the steam-filled city dome. A stranger was reborn as the most humble being in this world—a gray mouse. However, he started from the dark sewers, step by step farming, infrastructure construction, alliances with foreign races, and deciphering lost runes. The roar of steam resonated with the whispers of magic, the gears turned, and the dragon flapped its wings. He transformed into the "Sherlock Holmes" detective who had never appeared before, weaving an underground network that spanned races and classes, vowing to break the oppression of theocracy and use the power of machinery, magic, and faith to create a new era of civilization for all intelligent creatures, sharing, and co-governance. ——When he first stepped into this world, Lu Ran had only one self-deprecating sentence: "I, Mouse, am going to die this time..."

Xiao Xuan traveled to the world of cultivation, but his aptitude was extremely poor and he was only at the seventh level of Qi training until his death.

However, he later awakened the supreme treasure, the Book of Hundred Worlds, which allowed him to start a new life among his descendants after his death, and he could even strengthen his talents and awaken his supernatural powers!

Thus, after lifetimes of hard practice, he finally reaped the rewards of his hard work and became a giant in the world of cultivation!

The family he founded gradually became a huge force in the world of cultivation, and all his descendants were born with the blood of the mysterious bird and possessed magical powers...