He had no idea where the home of the Genii was, but Yun-Ying took him out into the garden, and showed him, in the far distance, a range of snow-capped mountains, with one peak towering above all the others.
“That is Mount Sumi,” she said, “and it is there the Genii live, sitting on the snow-peaks, and looking down at the Lake of Gems.”
“In order to reach it you must cross the Blue River, the White River, the Red River, and the Black River, all of which are full of monstrous fishes. That is why my mother is sending you,” sighed Yun-Ying. “She thinks you will not return alive.”
“I am a good swimmer, and not afraid of fish,” said Pei-Hang.
“But you must not try to swim,” said Yun-Ying earnestly, “for you would be instantly devoured. Take this box with you. In it you will find six red seeds, one of which you must throw into each river as you come to it. The river will then shrink to the size of a small brook, over which you can jump.”
Pei-Hang opened the box, and saw inside six round, red seeds, each of them the size of a pea, and these he promised to use as she had directed. Then he kissed her, and set out on his journey.
On his way to Mount Sumi he passed through the town in which his parents lived, and when he saw them, he told them everything that had happened to him since he left Chang-ngan.
His mother, who was a very wise woman, as most mothers are, told him the Genii would be angry if he turned their great rivers into brooks, and would probably refuse to give him the pestle and mortar made of jade. But she gave him a box containing six white seeds, one of which he was to cast into each brook as he passed it on his return journey, and it would then expand into a river again.
The next morning Pei-Hang kissed his parents, and continued on his way to Mount Sumi. On the seventh day he came to the Blue River, which was a quarter of a mile wide, and as blue as the sky of summer, and fishes were popping their heads out of the water in every direction. The head of every fish was twice as large as a football, and had two rows of teeth. But he threw a red seed into the river, and in a moment it had become a little brook, across which he could hop on one foot, and the huge fishes were changed into tadpoles.
Very soon he reached the White River, which was half a mile wide, and so rapid that it was covered with foam, and full of immense sea-serpents.