Zi Yu

Zi Yu (子煜, Zi Yù) was a prince of the small kingdom of Liuli, and Zhi Ming's best friend.

Appearance
Zi Yu is a handsome young man with small brown eyes and black hair. He usually wears robes of different shades of green with a gat, a Korean traditional hat. Later on, he starts to wear his hair tied in a braid, or tied in a bun with the other half left loose.

Personality
Zi Yu is an honest and kind person who sticks to his own ideals, with a strong sense of duty and justice. He has show to be a loyal and supportive friend to Zhi Ming, as well a capable soldier and military leader. Despite the fact that he initially didn't liked Zhi Ming's character and his silly way of doing things, he gradually stars to fall in love with him. However, he eventually realizes that his love was an unrequited one as the great love of Zhi Ming's life was Murong Li.

Although hurt, he accepts the fact that Zhi Ming was always going to look at him as a good friend only and chooses to stay by his side to protect him. Zi Yu would do anything to garantize Zhi Ming's safety, even risking his own life. His strong sense of duty and loyalty towards Zhi Ming is even noticed by Murong Li, and although both men don’t get along that well (as Murong Li sensed his attraction for Zhi Ming), he trusted Zhi Ming's care to him when he was bounded and in a weak state.

History
He was sent by his older brother to Tianquan in order to learn the customs and culture of the central region, mainly because he was wasting his time in the palace. He becomes a good friend of king Zhi Ming, although initially their friendship had a rocky start. His eventual death causes Zhi Ming's separation of Murong Li.