The Fang Brothers, Fang Bi () and Fang Xiang (), are two palace generals serving King Zhou of the Shang dynasty in the Chinese novel Investiture of the Gods (Fengshen Yanyi).
In Fengshen Yanyi Following the death of Queen Jiang, Fang Bi and Fang Xiang join other officials in discussing the situation at court. When King Zhou orders the deaths of his sons Yin Jiao and Yin Hong, the brothers turn against him. Fang Bi takes Yin Jiao and Fang Xiang takes Yin Hong, and they carry the two princes out of Chaoge while declaring their intention to seek military assistance in Donglu.
Huang Feihu catches up with them and tells them that King Zhou has ordered the princes' deaths. After discussing their options, Fang Bi and Fang Xiang separate from the princes, who continue toward Donglu and Nanlu. The brothers later make their way to the Zhou forces and join the campaign against Shang.
During the campaign, Fang Bi is sent to break the Wind-Roaring Formation (風吼陣), where he is killed. Fang Xiang is later sent to break the Soul-Destroying Formation (落魄陣), where he also dies.
After the establishment of the Zhou dynasty, Jiang Ziya receives the decree to confer divine titles on the dead. Fang Bi is appointed as the Xian Dao Shen (顯道神), while Fang Xiang is appointed as the Kai Lu Shen (開路神).
Worship Fang Bi and Fang Xiang have been depicted as paired guardian deities in Chinese folk religious art. They are also associated with the door-god tradition in some regions. In some representations, the brothers are shown as large martial figures guarding entrances.
In traditional Chinese ritual culture, the name Fang Xiang is also associated with the older figure of Fangxiang Shi (方相氏), an official responsible for exorcistic rituals and funerary processions. Fengshen Yanyi presents Fang Bi and Fang Xiang as two separate characters and later gives them the divine titles Xian Dao Shen and Kai Lu Shen.
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