sentences:  For instance, Emperor Huizong of the Song dynasty canonized five colored dragons as "kings".With the addition of the Yellow Dragon of the Center to Azure Dragon of the East, these Vermilion, White, and Black Dragons coordinate with the Four Symbols, including the Vermilion Bird of the South, White Tiger of the West, and Black Tortoise of the North.Several Ming dynasty texts list what were claimed as the Nine Offspring of the Dragon (), and subsequently these feature prominently in popular Chinese stories and writings.