Erlang Shen

Strict ½ demigod under the dominant literary tradition (Yáojī + Yáng Tiānyòu); the Li Erlang variant (Li Bing's son, mortal-mortal) is recorded as secondary. Canonical narratives: cleaves Mount Tao with the Heaven-Splitting Axe to free his imprisoned mother (the foundational mountain-cleaving template that the Chen Xiang cycle later reproduces); subdues Sun Wukong during the Havoc in Heaven (Xiyou Ji 6-7); assists King Wu of Zhou in the Investiture of the Gods Shang-Zhou transition campaign. Distinctive iconography: vertical third eye in forehead, three-pointed double-edged blade, the Howling Celestial Dog, the Heaven-Splitting Axe. Post-deeds canonization as Qingyuan Miaodao Zhenjun installs him in the Daoist celestial bureaucracy under his uncle the Jade Emperor — the demigod-to-deity transition is recorded in the lifecycle array. Per Investiture of the Gods (c. 1605); Journey to the West (1592); Erlang Baojuan; Bao Lian Deng.

Parentage

• maternal: Yaoji
• paternal: Yang Tianyou

Variant accounts

• parentageAlternate origin tradition identifies Erlang as Li Erlang (李二郎), second son of the Qin-dynasty hydraulic engineer Li Bing (李冰), governor of Shu (蜀, Sichuan) c. 256 BCE who built the Dujiangyan irrigation works. Under this variant Erlang's parentage is two mortals (Li Bing + unnamed wife) rather than deity + mortal — failing the strict demigod criterion. The Li Erlang tradition reflects historical-engineer apotheosis (the deification of Li Bing's work in Sichuan local cult) and was later conflated with the Yáng Jiǎn tradition at Guankou.Sichuan local cult tradition; Yi-jian Zhi (Hong Mai, Song dynasty); Records of the Grand Historian (Shiji 29) on Li Bing (primary)

Domains

• celestial warriorship
• hunting
• flood control

Powers

• shape shifting
• Shapeshift via the seventy-two transformations
• See truth through the heavenly third eye

Epithets

• 清源妙道真君 chinese · Qīngyuán Miàodào Zhēnjūn'True Lord of the Pure Source and Wondrous Way' — his Song-era canonized titleSong investiture records; temple gazetteers of the Guankou cult (secondary)
• 二郎神 chinese · Èrláng Shén'The Second-Son God' — his standard cult nameFengshen Yanyi; Xiyou ji (secondary)
• 灌口二郎 chinese · Guānkǒu Èrláng'Erlang of Guankou' — the Sichuan flood-control cult titleSichuan local gazetteers (Guankou temple) (secondary)

Relations

• enemy: Chen XiangReciprocal of chinese_chen_xiang.enemyBao Lian Deng (primary)
• sibling: SanshengmuIn the Magic Lotus Lantern tradition Sanshengmu is Erlang's sister — both children of Yáojī and Yang Tianyou. This stratum is later than the independent Mount Hua goddess tradition (see Sanshengmu variants); registry preserves the sibling relation here while flagging the conflation issue in Sanshengmu's entry.Bao Lian Deng (Magic Lotus Lantern) tradition; Erlang Baojuan stratum identifying them as siblings (primary)
• rival: Sun Wukong (Chinese deified Monkey King protagonist of Wu Cheng'en's Xiyou Ji / Journey to the West; not registered as standalone entry per the registry's deity-only-as-required-parent-anchor principle) · ChineseThe shape-shifting duel during the Havoc in Heaven; Erlang ultimately captures Sun Wukong with help from the Howling Celestial Dog and Laozi's Diamond Snare. Sun Wukong entry pending.Xiyou Ji ch. 6-7 (Wu Cheng'en, 1592) (primary)
• rival: Sun WukongReciprocal of chinese_sun_wukong.rival — Erlang Shen and Sun Wukong fight the famous transformation duel; Erlang finally captures him.Wu Cheng'en, Journey to the West, ch. 6 (the shapeshifting duel) (primary)

Sources

• existence: Investiture of the Gods (Fengshen Yanyi, attributed Xu Zhonglin / Lu Xixing, c. 1605); Journey to the West (Xiyou Ji, Wu Cheng'en, 1592) ch. 6-7; Erlang Baojuan (Ming precious-scroll genre); Bao Lian Deng (Tang folk-cycle, Yuan-Ming dramatic tradition) (primary)
• parentage-yang-jian: Erlang Baojuan; Bao Lian Deng tradition (primary)
• parentage-li-erlang-variant: Sichuan local cult; Yi-jian Zhi (primary)
• apotheosis: Song-dynasty imperial enfeoffment; Daoist canonization (primary)