At the north of Ch’iungta, there is a Dark Sea, the Celestial Lake. In it there is a fish several thousand li in breadth, and I know not how many in length. It is called the k’un. There is also a bird, called the p’eng, with a back like Mount T’ai, and wings like clouds across the sky. It soars up upon a whirlwind to a heightof ninety thousand li, far above the region of the clouds, with only the clear sky above it. And then it directs its flight towards the Southern Ocean.
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https://www.youtube.com/watch?v=XhbbvhpAQMA