So this story was set in the Tang dynasty, and is about this scholar called Ren Xu. Since this dude was a scholar, he really liked sitting at home and reading instead of going aroung to see the world, so that was what he did. He lived in the mountains where he started reading books.

Anyway, he was reading some book, chillin’ in the mountains, when this old man came up to him. He was holding a staff, and wearing yellow and shiz. So the old man started talking to Ren Xu, and Ren Xu noticed that this old man seemed really unhappy. 

Ren Xu was all, “What’s wrong? You okay, dude?”

“Aha, I was waiting for you to say that!” said the old man. “The thing is, I ain’t a man, but a dragon. I live in the pool to the west of here, but someone is gonna kill me. I so need yo’ help, man.”

“But I’m only a poor scholar who knows how to read and shiz,” Ren Xu said. “What can I do?”

“Well, you only need to say a few words.”

“What are they?”

“K, so in two days, this dude is gonna kill me by the pool. He is gonna drain the water out of it, and you have to say this: ‘Heaven decrees death to anybody who kills the yellow dragon, yo!’ This will happen like, three times, so you have to do it there times and then you will have saved me.

“All right, sounds easy enough,” Ren Xu said, and he promised the old man to do it. 

Two days later, Ren Xu was chillin’ near the pond, and he saw that a huge-ass cloud was above it. The cloud got closer and Ren Xu realized that there was an immortal on the cloud. The dude took out slips of paper with Chinese words on them (also known as Chinese charms) and tossed them into the water. The water dried up and Ren Xu saw a yellow dragon in the pool. He remembered what he was supposed to say and he yelled, ”Heaven decrees death to anybody who kills the yellow dragon, yo!”

And the pool was filled with water again.

The immortal dude got pissed off, and he took out another set of charms and tossed them into the pool. The same thing happened, and so, Ren Xu said again, “Heaven decrees death to anybody who kills the yellow dragon, yo!”

The priest tried another set of charms, and they changed into fire which dried up the water. Ren Xu said the same thang again, and the pool had water again. The immortal got so angry, he yelled at Ren Xu: “I practised my magic fo’ ten years just to do this shit. You’re a mortal - how did you even do this?” He didn’t even wait for Ren Xu to reply and he stormed off.

Later, when Ren Xu was sleeping, he had a dream. He dreamt that the dragon came to visit him.

“Hey, uh, thanks for helpin’ me. If not, I would have been toast. Oh yeah, Imma give you this, to say thank you, y’know?” The dragon handed Ren Xu the pearl, and that was that.

When Ren Xu woke up, he saw the pearl on the grass. He went to Guangling to sell it, and the merchant was all, “Dude, no one on earth has gotten the treasure of a black dragon!” Ren Xu sold the pearl fo’ lotsa money, and that was the end of that.