Yue Bairong is the brother of Xing Bairong and Lee Bairong. Yue switched identities with Xing; Xing is the Emperor, although it is formally Yue (who now goes by Xing's name).
Personality
Yue is very hard-working, loyal, and empathetic. He strives to be the best he can be, and takes incredible tasks and training upon himself. Also, he is the most caring and kindly person of the Bairong Princes.However, that is not all there is to him. He does have an analytical side, and proves to be the most intelligent of his sibling when he begins his work on the 170 Volumes of the Tae-Pyung-Chung-Ryung-Sue. These books list the problems of the empire. But, he knew that the ministers and subjects of the empire "wouldn't show or tell" him the truth because they would have been scared of offending him while he was emperor. His ability to read people and think strategically serves him well, and he is still able to make a contribution to the Empire.
Though he has not done much extensively in current events, the state of his empire's capital city and his reaction may mean that he may have become a much different person than the humble, untested brother that he once was.
Not much has been seen of Yue's combat ability as of late. All that is known is that he can use Chi, presumably on the level of, of, and with the skill of, a Bairong Emperor.
Powers
When he is seen in the Bairong Empire Arc, his abilities have increased drastically; he is easily able to overpower Xing, and nearly overpowers Lee.