what is the origin of the bloody mary lore

“Young man, I can tell from your skeletal structure that you have an extremely rare talent. You must be a one in a million prodigy in the martial arts. Now that the Blue Planet has ascended, mutant beasts are ravaging our homes, and foreign species are invading our land, our people are in grave danger. Here, I have an [Infinite Demon God Physique Training Method], I’ll give it to you for just two dollars. You shall be entrusted with the mission of maintaining world peace.” Xu Lingyun was touched. He said, “I can’t believe that you can actually see my true potential. Here’s four dollars, no need to give me change.” The scammer took the money, left him a fake secret training manual, and left feeling content. Xu Lingyun brought the secret manual home. He slapped the cover of the book. Instantly, the aged, tattered book started emanating a magnificent array of lights. An ancient and powerful aura filled the air, dominating the stars and piercing through the age. A fake? Oh please, in front of me, there is no such thing as “description may not match the actual item, please see the actual item”.