Dragons are supposed to be malevolence and diabolical mortals. In Christian symbology, a dragon is seen defeated by the archangel Michael, whereas in myths and fairy tales dragons are killed and slain by the hero of the story. In China however, this mythological symbol dates back to 3000 BC and stands for happiness, immortality, procreation, fertility and activity.  Dragons were believed to ward off evil spirits. Take a look at a Chinese city and you’ll see dragons decorating ancient monuments and buildings, sometimes playing with a pearl or thunder-ball. One can also see dragons on the garments of ancient Chinese generals. The Emperor alone had nine of them on his brocade. 
From the Han dynasty and on (206 BC – 220 AD) dragons took a symbolic meaning based on their colours. Chinese dragons were often red or gold, turquoise or white. The turquoise dragon was the symbol of the Emperor, the East, the rising sun, the rain as well as the fifth element of the Chinese zodiac. The white dragon on the other hand stood for the West and death.