Note 21 — Chapter XV · Mythical and Legendary Kings
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After Wu died spirit-birds appeared, and a mysterious bean, which was an elixir, grew up. The Crown Prince was still a minor, and for seven years the Duke of Chou acted as regent. Accompanied by the young king the duke visited the Ho and the Lo. The king dropped a gem into the water, and after day declined “rays of glory came out and shrouded all the Ho (Yellow River), and green clouds came floating in the sky. A green dragon came to the altar, and went away. They did the same at the Lo, and the same thing happened.” A tortoise appeared, and on its shell were writings that told of the fortunes of the empire till the dynasties of Tsʼin and Han.21