In the Sea of Dungting there is a hill, and in that hill there is a hole, and this hole is so deep that it has no bottom.
Once a fisherman was passing there who slipped and fell into the hole. He came to a country full of winding ways which led over hill and dale for several miles. Finally he reached a dragon-castle lying in a great plain. There grew a green slime which reached to his knees. He went to the gate of the castle. It was guarded by a dragon who spouted water which dispersed in a fine mist. Within the gate lay a small hornless dragon who raised his head, showed his claws, and would not let him in.
The fisherman spent several days in the cave, satisfying his hunger with the green slime, which he found edible and which tasted like rice-mush. At last he found a way out again. He told the district mandarin what had happened to him, and the latter reported the matter to the emperor. The emperor sent for a wise man and questioned him concerning it.
The wise man said: “There are four paths in this cave. One path leads to the south-west shore of the Sea of Dungting, the second path leads to a valley in the land of the four rivers, the third path ends in a cave on the mountain of Lo-Fu and the fourth in an island of the Eastern Sea. In this cave dwells the seventh daughter of the Dragon-King of the Eastern Sea, who guards his pearls and his treasure. It happened once in the ancient days, that a fisherboy dived into the water and brought up a pearl from beneath the chin of a black dragon. The dragon was asleep, which was the reason the fisherboy brought the pearl to the surface without being harmed. The treasure which the daughter of the Dragon-King has in charge is made up of thousands and millions of such jewels. Several thousands of small dragons watch over them in her service. Dragons have the peculiarity of fighting shy of wax. But they are fond of beautiful jade-stones, and of kung-tsing, the hollowgreen wood, and like to eat swallows. If one were to send a messenger with a letter, it would be possible to obtain precious pearls.