Guan Xing (Chinese: 關興) is one of the minor protagonists in the 14th-century Chinese classic novel Romance of the Three Kingdoms by the late Luo Guanzhong, and its multiple adaptations. He is the second son of Guan Yu and a younger brother of Guan Ping.
Guan Xing trained early in the fields of martial arts and cavalry, he looks like for being very smart that similar to his family. At the time, Guan Xing alongside his father Guan Yu defense of the Jing Province, Hou Yu rebelled against Wei in the capital and helped him defend the Wan Castle. In next year, he was sent to Chengdu to announce the victory of his father over Yu Jin's seven armies in the Fan Castle, but his father fell on the spears of Fu Shiren and Mi Fang. After his father and older brother's death, Guan Xing joined the vengeful expedition against the Wu.
Guan Xing then took an oath of blood with Zhang Bao, and together they served Liu Bei as a bodyguard. Then, taking part in the fighting, he greatly contributed to the victory over Sun Huan's forces, notably by killing Li Yi and capturing Tan Xiong. Three years later, he participated in the election campaign of Yiling, and captured Fu Shiren and Mi Fang in the battle. When he entered the enemy line, Guan Xing eventually encountered his famous nemesis Pan Zhang. Although he can followed him and lost his way, Pan Zhang forced into the house and meet Guan Xing. At this time, Guan Yu showed his spirit and scared Pan Zhang, Guan Xing immediately killed him and taking back his father's weapon, Green Dragon, from his hand. Unfortunately he did not managed to get Red Hare because the horse was dead, supposedly because it did not want to eat after the death of Guan Yu.
But later on, Guan Xing accompanied Zhuge Liang in his northern campaign against Wei as a Guardian of the Right with the honorary title of General "Dragon Fier". Always with Zhang Bao and according to the plans of Zhuge Liang, Guan Xing is not suitable for Zhuge Liang to find more trouble, he can never be scolded for anyway, just want to be careful and not be fooled. When he managed to take the city of Nanman. He also scored a victory against the Qiang tribes, then allied to the Wei, killing Yue Ji, then fleeing Sima Yi to Wugong Hills, pretending a massive ambush. Soon after, Guan Xing was active again in the northern countryside, It was for the next battle to be defeated and later died of illness.
A quiet and introspective youth, he is considered a genius worthy of Zhuge Liang's respect. In stark contrast to other family members, he tends to think more carefully.
Unlike his other brothers and sisters, Guan Xing is calm and persevering, but because of his introverted behavior, he is easy to be a baby, which he does not like. In order to prove himself on the battlefield, Guan Xing often clashes with his brother Zhang Bao, Zhang Bao feels that he is too inexperienced.
Feeling that compensation is needed, Guan Xing is unscrupulously trying to take on more responsibilities. In the end, he learned to share his burden with the comrades, and the two shared a closer connection.
- He is a playable character in the Dynasty Warriors series.