Yang is one of a pair of twin brothers raised in Hong Kong by their relative 'Lee' and a martial arts master known as Gen. He is known as the Blue Flurry Dragon and together with his brother Yun protects his town (a neighbourhood in Hong Kong) from thugs, underworld types and so on.
Yang is the more sombre and serious of the two brothers. He prefers substance over style, and because of this his talents are often overlooked in comparison to his brother. He harbours a bit of jealousy towards Yun as a result and is constantly seeking to improve himself with the eventual goal of eclipsing Yun as the premier martial artist of the family. Compounding this is Yang's hidden love for Hohmei, a girl who only has eyes for Yun. Despite this rivalry, the two brothers most often work together against external threats and each would gladly fight to the bitter end for their sibling.
Yang, like Yun, is hard to place strength-wise. He is obviously talented and extremely good for his age, but where he fits in the grand scheme of things is hard to pinpoint. He is probably slightly less powerful than his brother. His style seems to focus more on direct force, though like his brother he is highly mobile. He likes to rollerskate.