Mount Emei

That prompted the bold demon king to flee toward the south.

But in that direction, he was blocked by the Vajra of Cool and Clear Cave on Mount Emei, who was also there by the Buddha's decree.

Panicked, the bold demon king fled toward the east, but the vajra of Mor'er Cliff on Mount Sumeru blocked his path.

Surrounded by gods from multiple religions, the bold demon king was feeling just a tad intimidated.

It began all the way back in 1022 AD.

According to a small book called The Correct Treatment of Smallpox, a Buddhist nun living in a famous mountain named Omei Shan in the southern province of Sichuan would grind up smallpox scabs and blow the powder into nostrils of healthy people.

She did this after noticing that those who managed to survive smallpox never got it again, and her treatment worked.

The procedure, called variolation, slowly evolved, and by the 1700s, doctors were taking material from sores and putting them into healthy people through four or five scratches on the arm.