
| NAME | |
|---|---|
| Chinese Name | 郁保四, 郁保四, Yù Bǎosì |
| Nickname | 105 - Earthly Healthy Star - 地健星 (Dìjiàn Xīng) - Địa Kiện Tinh; God of Dangerous Roads (險道神, Xiǎndàoshén, Hiểm Đạo Thần) |
| Other name | Úc Bảo Tứ |
| INFORMATION | |
| Birth Place | Qingzhou (青州; Thanh Châu) |
| Death Reason | Killed in battle at Qingxi (青溪, Qīngxī, Thanh Khê) by Du Wei (杜微, Dù Wēi, Đỗ Vi) during the Fang La (方腊, Fāng Là, Phương Lạp) campaign |
| CAREER | |
| Allegiance | Liangshan Marsh |
| Battles | Capture of Zeng Tou City, Campaign against Liao, Campaign against Fang La |
Yu Baosi: Biography and Origins
Yu Baosi (郁保四), nicknamed the “God of the Dangerous Path” (险道神), is one of the 108 Liangshan heroes featured in the classic Chinese novel Water Margin. Towering over ten feet tall with immense physical strength, he initially operated as an independent bandit leader near Mount Qingfeng during the Northern Song Dynasty. After boldly intercepting a convoy of precious horses intended for Liangshan Marsh, he was captured by the outlaw leaders and persuaded to join their righteous cause.
Tactical Role on the Battlefield
Ranked 105th among the Stars of Destiny as the Earth Demon Star, his commanding stature made him an invaluable asset for field coordination. Rather than engaging primarily as a frontline duelist, he was entrusted with carrying the primary vanguard banner of the Liangshan army. In ancient warfare, massive battle standards functioned as the vital communication system for troop formations. His exceptional height allowed allied forces to track strategic rally points and execute coordinated maneuvers even amidst the chaos and smoke of battle.
Beyond standard-bearing duties, he contributed to psychological warfare and defense operations. His imposing figure intimidated enemy vanguard units and raised the morale of allied infantry. Following Liangshan’s imperial amnesty, he served dutifully throughout national campaigns against foreign invaders and domestic insurgencies.
Historical & Literary Timeline
Defection to Liangshan
Captured during the armed clash at the Zeng Family Fortress, he accepted the magnanimous pardon offered by Lu Junyi and officially joined the outlaw brotherhood.
Heroic Demise
During the southern campaign against the rebel leader Fang La, Yu Baosi was fatally struck by a concealed flying dagger thrown by enemy commander Du Wei.
Key Relationships and Allegiances
- Song Jiang: The supreme chieftain of Liangshan Marsh, to whom Yu Baosi demonstrated steadfast personal loyalty throughout numerous military campaigns.
- Lu Junyi: The prominent second-in-command who orchestrated the tactical maneuvers that led to the giant warrior’s peaceful surrender.
- Fang La: The southern rebel warlord whose elite commanders engaged the Liangshan vanguard in the costly final expedition.

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