Encyclopedia: Xu Dan

Xu Dan; Hsü Tan; 许耽

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You are viewing the profile of Xu Dan (许耽) born in Danyang. “Officer of Liu Bei in Xuzhou. Opened the gates for Lü Bu when he attacked Zhang Fei.” Xu Dan was affiliated with the Shu Kingdom and Lu Bu. Return to the Three Kingdoms Encyclopedia to learn more or explore our Encyclopedia Directory to browse by kingdom or category.

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Xu Dan 许耽

Lived: Unknown

Biographies:
None Available

Served: Shu, Lü Bu

Officer of Liu Bei in Xuzhou. Opened the gates for Lü Bu when he attacked Zhang Fei.

Officer Details

Wade-Giles: Hsü Tan
Simplified Chinese: 许耽
Pronunciation: Xu3 Dan1
Cantonese (Yale): Heui Daam
Cantonese (Jyutpin): Heoi Daam

Birthplace: Danyang

Rank and Titles

General of the Gentlemen of the Household

Literary Appearances

Sanguozhi: Wei 7

Zizhi tongjian: 62

Biography

Historic (Confirmed)

Xu Dan of Danyang served Liu Bei as General of the Gentlemen of the Household. He was also stationed in Xiapi when Zhang Fei was left in command. In February of AD 196 Cao Bao, formerly an officer of Tao Qian, came into trouble with Zhang Fei and consequently Zhang Fei killed him, causing riots in the city (1). Xu Dan wrote to Lü Bu inviting him to attack Xiapi and offering his support from within (2). Yuan Shu is also said to have written Lü Bu (3).

(1): Accounts of this event differ. Zizhi tongjian describes the event as a ‘falling out’. Sanguozhi’s original text explains that Cao Bao rebelled and called for Lü Bu’s support. Hanmo yingxiong ji, quoted by Pei Songzhi in SGZ 7 explains that Zhang Fei intended to kill Cao Bao, but that Cao Bao took refuge in the encampment and called for Lü Bu. (It should be pointed out that Lü Bu and Cao Bao had no documented relationship prior to these events.)

(2): SGZ: 7, Hanmo yingxiong ji quoted by Pei Songzhi. Rafe de Crespigny, in To Establish Peace I 62, writes, “Hanmo yingxiong ji in PC [Pei’s Commentary] to SGZ 7, however, quotes a letter written to Lü Bu by Xu Dan, offering to act as his agent within, and saying that Zhang Fei had already killed Cao Bao. It was through Xu Dan that Lü Bu defeated Zhang Fei and captured Xiapi city.”

(3): Again quoting Rafe de Crespigny, To Establish Peace I 62, “[Hou Han shu] 75/65 and another extract from Hanmo yingxiong ji quoted in [Pei’s commentary] to SGZ 7 contain the text of a letter written by Yuan Shu to Lü Bu about this time. It is certainly friendly, promising supplies and listing the achievements of Lü Bu on behalf of Yuan Shu, but it appears to refer to Lü Bu’s attack on Liu Bei as having taken place, and so cannot have been an encouragement to that action.”

Lü Bu, who joined Liu Bei two years prior and was probably stationed in the northwest of Xiapi commandery, traveled down the Si River by water and land. Upon arrival Xu Dan kept his word and opened the gates, allowing Lü Bu to enter the city. Zhang Fei was consequently defeated and Lü Bu captured Liu Bei’s wife, children, and the families of his civil and military officers. (4)

(4): Primary source: de Crespigny, Rafe, To Establish Peace vol. I.

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May 13, 2014