Zhang Hanlin, a science and engineering guy, transmigrates to a cultivation world and crafts firearms with his bare hands. He builds swarms of drones, self-destructing puppets, and gun-wielding robotic dogs, becoming invincible among those at his cultivation level without even realizing it. Killing enemies above his level is easy too.
This book pays tribute to A Record of a Mortal's Journey to Immortality, but there's no Han Paopao. His enemies can only dream of escaping from the protagonist.
King of handguns, the Desert Eagle: 200-meter range, 2.05 kilograms, can kill low-level Qi Refining cultivators in a second. (All firearms use armor-piercing rounds made from special materials.)
UZI submachine gun: empties its magazine in one second, posing a major threat to high-level Qi Refining cultivators.
Maxim heavy machine gun: fires a thousand rounds per minute. Low-level Foundation Establishment cultivators would do well to avoid its edge.
RPG rocket launcher: 300-meter range. Mid-level Foundation Establishment cultivators will be left crippled if they survive.
Barrett sniper rifle: 2,000-meter range. Once you're in its sights, high-level Foundation Establishment cultivators are as good as dead.
Cruise missile: 500,000-meter range. It can take an enemy's life from a thousand miles away, and even Golden Core cultivators have to flee for their lives.
Hypersonic missile: range covers the entire planet. Nascent Soul experts will drop to their knees and beg for mercy.
Zhang Hanlin makes a bold claim: Below the immortals, I'm invincible. Above them, I can take one down with me.
Cultivators can casually create intelligent puppets, and their firearms are supposed to be able to compete with others? What are you thinking? Even fantasies need some intelligence.