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The White Dragon Horse, known as Bai Long Ma (Chinese: 白龍馬; pinyin: Bái Lóng Mǎ; Wade–Giles: Pai² Lung²-ma¹; lit. 'White Dragon Horse'), and Yü Long (Chinese: 玉龍; pinyin: Yù Lóng; Wade–Giles: Yü⁴ Lung²; lit. 'Jade Dragon'), in Chinese, is one of the main characters in the 16th-century Chinese novel Journey to the West.[1] He is Tang Sanzang's steed who later became one of the Babu Tianlong Guangli Bodhisattva (Chinese: 八部天龍廣力菩薩; pinyin: Bābù Tiānláng Guǎnglì Púsà; Wade–Giles: Pa¹-pu⁴ T'ien¹-lung² Kuang³-li⁴ P'u²-sa⁴; lit. 'Celestial Dragon Extensive-strength Bodhisattva of the Eight Legions') at the end of novel.[2][3]
In Journey to the West, the Bai Longma is a dragon prince who is the third son of the Dragon King of the West Sea. He once accidentally set a fire that destroyed a pearl that was a gift from the Jade Emperor. He was about to be executed for committing this offense when Guanyin appeared and pleaded for his life. The dragon prince was spared from death and banished to Yingchou Stream (鷹愁澗) in Shepan Mountain (蛇盤山), on the instruction to wait there for a monk Guanyin is to send on a pilgrimage to the Buddha.[4][5] When Tang Sanzang is crossing the stream, the prince appears in the form of a gigantic white dragon and swallows Tang's white horse in one gulp. The dragon fights with Sun Wukong but is no match and retreats underwater. Sun Wukong hears from an Earth Deity that the dragon was placed there by Guanyin so he goes to find the bodhisattva and learns of the dragon's origin. The dragon prince had been waiting there for Tang Sanzang but did not recognize the latter and ate his horse as a result. The dragon transforms into the White Dragon Horse and serves as Tang Sanzang's steed for the rest of the latter's journey.[6]
When Tang Sanzang was captured by the Yellow Robe Demon, the White Dragon Horse transforms himself into a young man and attempts to save Tang Sanzang, but fails. He escapes to inform Zhu Bajie, who in turn brings back Sun Wukong to save Tang Sanzang.
At the end of the novel, the White Dragon Horse is ordained as the Great Strength Bodhisattva of the Eight Heavenly Sections (八部天龙广力菩萨) and Dragon Horse of the Eight Heavenly Sections (八部天龍馬). He turns into a white dragon and wraps his body around one of the pillars in the Great Leiyin Temple.[7]
Bai Longma is worshipped as a deity in Chinese folk religion. Located in Rua Yai, Mueang Suphan Buri District, Suphan Buri, Thailand, the City Pillar Shrine (ศาลเจ้าพ่อหลักเมืองสุพรรณบุรี) enshrines the golden statue of Bai Longma, along with Tang Sanzang, Sun Wukong, Zhu Bajie, and Sha Wujing.