Chinese dragons are legendary creatures in Chinese mythology and Chinese folklore. In Chinese art, dragons are typically portrayed as long, scaled, serpentine creatures with four legs. In yin and yang terminology, a dragon is yang and complements a yin fenghuang ("Chinese phoenix").
As said, they are long, scaled, serpentine four-legged creatures, they commonly have facial hair ( Long moustaches, beard and hair ) and haired crest which ends in the tail. They also have stag-like horns, their nostrils are close, resembling a mammalian snout and their tongues are very long.
Chinese dragons traditionally symbolize potent and auspicious powers, particularly control over water, rainfall, hurricane, fire and floods. The dragon is also a symbol of power, strength, and good luck for people who are worthy of it. With this, the Emperor of China usually used the dragon as a symbol of his imperial power and strength.
Other asiatic countries, like Japan, North and South Korea had their dragons heavily based on the chinese one.