The Ming Dynasty Scalpel: From the Start, I Operate on Zhang Juzheng's Hemorrhoids

Overnight, he transmigrated to the Ming dynasty, and the first thing he had to do was treat Zhang Juzheng's hemorrhoids?

He Xuan, an ordinary surgeon, had returned to an age when modern medicine had yet to develop and the secrets of the human body's microscopic world remained undiscovered.

Penicillin, abdominal surgery, modern hospitals: He Xuan used his professional skills to try to change the world.

But a single person's ailment can be cured at its root with a small knife.

What can be used to cut out the root of the world's ailments?