Black Yin fish, white Yang fish, Stirring storms with a sky-flipping swish. Leaping, twirling, never at rest, Boundless power in a bowl compressed.
In the South Sea, there is a fish over six meters long. Its dorsal fin resembles a blade and can change color at will, whether white or black. This fish can fly into the sky, creating massive winds and waves as tall as mountains. Each time this fish appears, the village suffers from a plague.
Once, a fisherman returning from his catch encountered an elderly man who could barely walk. Despite his frailty, the old man carried a heavy, tattered bundle filled with scrolls. Exhausted and without money to pay for a boat ride, he struggled along the riverbank. The kind-hearted fisherman, seeing the old man's plight, offered him a free ride across the river and even gave him two fresh fish for a meal. Grateful, the old man performed a divination on the spot and said, "In a few days, a young man wearing a bamboo hat and a white robe will pass by. Under no circumstances should you let him come to your village. On the day he arrives, do not conduct any business on the river, or you will lose your life."
After delivering these cryptic words, the old man vanished from the boat, leaving the fisherman both astonished and frightened. Yet, he etched the old man's warning deep into his heart. A few days later, while fishing, he indeed saw a man on the riverbank who matched the old man's
description exactly. The man, claiming to be weary from his travels, asked the fisherman if he could take him to the nearby fishing village to rest. The fisherman initially wanted to refuse but then decided to take the man to a neighboring village downstream instead. After dropping the man off, the fisherman docked his boat and dared not return to the river.
At that moment, the man pulled a black bowl from his sleeve and threw it into the river. As soon as the bowl hit the water, a massive, pitch-black fish emerged, and a fierce storm erupted, with waves surging sky-high. The fisherman fled without looking back. Some time later, he heard that a severe plague had struck the neighboring village, killing many people. Initially feeling a sense of relief, he soon learned that refugees from the neighboring village had brought the plague to his own village, and they too were not spared.