A Qing dynasty block print of Xu Shu
|Official of Cao Wei|
|Courtesy name||Yuanzhi (Chinese: 元直; pinyin: Yuánzhí; Wade–Giles: Yüan-chih)|
|Other names||Shan Fu (simplified Chinese: 单福; traditional Chinese: 單福; pinyin: Shàn Fú; Wade–Giles: Shan Fu)|
Xu Shu (birth and death dates unknown), courtesy name Yuanzhi, originally named Shan Fu, was an official of the state of Cao Wei in the Three Kingdoms period. He was born sometime in the late Eastern Han dynasty and used to be a vigilante swordsman in his early life. However, after running into trouble with the authorities, he renounced his old ways and took up scholarly pursuits. He lived a reclusive life from the 190s to mid-200s (decade) in Jing Province (covering present-day Hubei and Hunan provinces), where he met and befriended Zhuge Liang. In late 207, he became an adviser to the warlord Liu Bei and served under Liu for about a year. He also recommended Zhuge Liang to Liu Bei during this period of time. In late 208, Liu Bei was defeated at the Battle of Changban by his rival Cao Cao. Xu Shu's mother was captured by Cao Cao's forces during the battle. Feeling lost and without a sense of direction, Xu Shu eventually left Liu Bei and joined Cao Cao. He continued serving in the state of Cao Wei – founded by Cao Cao's son and successor, Cao Pi, who ended the Han dynasty – and died of illness in office.
Xu Shu's defection from Liu Bei to Cao Cao was fictionalised in the historical novel Romance of the Three Kingdoms. In the novel, he was Liu Bei's chief strategist before Zhuge Liang came along, and he once helped Liu repel two attacks from Cao Cao's general Cao Ren. He was eventually tricked by Cao Cao into leaving Liu Bei and joining Cao, but he recommended Zhuge Liang to Liu before leaving and swore never to give advice to Cao.
Xu Shu was from Yingchuan Commandery (潁川郡), Yu Province, which is in present-day central Henan. His original family name was "Shan" (單) and his original given name was "Fu" (福). He was a swordsman in his early life and he once helped someone take revenge by killing another person. To avoid being recognised, he covered his face with white chalk and let his hair run wild. He was later arrested by an official, who asked him for his name, but he did not reply. The official tied him to a cart, had him paraded through the streets, and asked for any person who could identify him. No one came forth. Xu Shu was later rescued by his fellows. He was so grateful to be saved that he gave up his life as a swordsman and became a scholar.
When Xu Shu first attended school, his mates ostracised him because of his background, but he remained humble and hardworking. He woke up early, cleaned the school alone, and paid great attention to his schoolwork. He met Shi Tao (石韜; also known as Shi Guangyuan 石廣元) and they became close friends. In the early 190s, when wars broke out in central China, Xu Shu and Shi Tao moved south to Jing Province (covering present-day Hubei and Hunan), where they met Zhuge Liang and befriended him. During his time in Jing Province from the late 190s to the early 200s (decade), Xu Shu maintained close friendships with Zhuge Liang, Shi Tao and Meng Gongwei (孟公威). They travelled and studied together.
Serving Liu Bei
When the warlord Liu Bei was stationed at Xinye (新野; present-day Xinye County, Nanyang, Henan), Xu Shu visited him and was highly regarded by the former. Xu Shu recommended Zhuge Liang as an adviser to Liu Bei and told him that Zhuge cannot be invited to meet him and that he must visit Zhuge personally. Zhuge Liang later came to serve Liu Bei after Liu visited him thrice and consulted him on the affairs of their time.
In 208, Liu Biao, the Governor of Jing Province, died and was succeeded by his younger son Liu Cong. Later that year, when the warlord Cao Cao invaded Jing Province, Liu Cong surrendered and much of northern Jing Province came under Cao Cao's control. Liu Bei led his forces and a large number of civilians south to Xiakou (夏口; in present-day Wuhan, Hubei), which was independent of Cao Cao's control and where Liu Biao's elder son, Liu Qi, was based. Xu Shu accompanied Liu Bei on his journey towards Xiakou. Cao Cao sent 5,000 riders to pursue Liu Bei. They caught up with him and defeated him at the Battle of Changban. Xu Shu's mother was captured by Cao Cao's men during the chaos, so Xu decided to leave Liu Bei to reunite with his mother. Before leaving, he pointed at his heart and told Liu Bei, "I wanted to join you, General, in making great achievements. This is my purpose in life. Now that I've lost my mother, I've also lost my sense of direction. This isn't going to be helpful. Now I bid farewell to you." He went to join Cao Cao. Shi Tao also followed him and both of them came to serve Cao Cao.
Service in Cao Wei
Xu Shu continued serving in the state of Cao Wei – founded by Cao Cao's son and successor, Cao Pi – after the fall of the Han dynasty and the start of the Three Kingdoms period. In the 220s, during the reign of Cao Pi, Xu Shu served as a "Right General of the Household" (右中郎將) and an Imperial Secretary (御史中丞).
During the reign of Cao Rui (Cao Pi's successor), Zhuge Liang – who was then the chancellor-regent of the state of Shu Han, which was founded by Liu Bei in 221 – led a series of campaigns to attack Wei. When Zhuge Liang heard that Xu Shu and Shi Tao had become wealthy and famous officials in Wei, he remarked, "There are some many talents in Wei. Why aren't the talents of these two men put to good use?" Xu Shu died of illness in Wei several years later. A tombstone with his name on it was found in Pengcheng (present-day Xuzhou, Jiangsu).
Xu Shu is featured as a fairly prominent character in the historical novel Romance of the Three Kingdoms, which romanticises the historical events before and during the Three Kingdoms period. He appeared mainly in chapters 35–36, in which he served as Liu Bei's strategist before Zhuge Liang came along.
Xu Shu was singing on the streets of Xinye (新野; present-day Xinye County, Nanyang, Henan) when Liu Bei noticed him and asked him if he was either the "Crouching Dragon" or the "Young Phoenix" whom Sima Hui spoke of. However, Xu Shu told Liu Bei that he was neither of them. He agreed to become Liu Bei's strategist and helped Liu counter an invading army led by Cao Cao's general Cao Ren. Cao Ren deployed his troops in an "Eight Gates Golden Locks Formation" (八門金鎖陣) outside Xinye, but Xu Shu pointed out the weaknesses in the formation and instructed Liu's general Zhao Yun on how to break it. Zhao Yun led his men to attack the formation and succeeded in breaking it and defeating Cao Ren. Xu Shu also accurately predicted that Cao Ren would launch a surprise attack that night after his defeat. Liu Bei defeated Cao Ren again in the night battle and forced Cao Ren to retreat.
Cao Cao was impressed when he heard about Xu Shu and was eager to recruit Xu as an adviser. He invited Xu Shu's mother to meet him and asked her to write a letter to her son, requesting that her son come to join him. Xu Shu's mother refused, denounced Cao Cao as a treacherous villain, and threw an ink stone at him. The furious Cao Cao ordered Xu Shu's mother to be executed but changed his mind when Cheng Yu reminded him that Xu Shu would be more determined to help Liu Bei oppose him if he killed his mother. Cao Cao then had Xu Shu's mother detained and asked Cheng Yu to pretend to be Xu Shu's sworn brother to win the trust of Xu's mother. After some time, Cheng Yu got close to Xu Shu's mother and learnt to mimic her handwriting. He wrote a letter to Xu Shu in the handwriting of Xu's mother, telling Xu that she was in trouble and urging him to come to the capital Xu (許; present-day Xuchang, Henan) quickly. Xu Shu was a filial son so he immediately left for Xu after reading the letter.
Xu Shu was in a hurry when he sped off on horseback. On the way, he suddenly remembered something and immediately turned back to meet Liu Bei and recommend Zhuge Liang to him. He then resumed his journey to Xu. When he arrived at his destination, he was shocked to discover that he had been tricked. His mother was furious with her son's failure to discern between truth and deception, and ashamed by the fact that her son joined Cao Cao instead of Liu Bei. She committed suicide. Xu Shu remained with Cao Cao, but he swore never to give advice to Cao.
The Chinese saying "His body is in (Cao) Cao's camp, but his heart is actually with the Han (dynasty)" (traditional Chinese: 身在曹營心在漢; simplified Chinese: 身在曹营心在汉; pinyin: shēn zài Cáo yíng xīn zài Hàn) is derived from this story about Xu Shu and another story about Guan Yu in Romance of the Three Kingdoms. It is used to describe a situation where a person who ostensibly works for a "bad" organisation is actually loyal towards another "good" organisation.
- (惟博陵崔州平、潁川徐庶元直與亮友善，謂為信然。) Sanguozhi vol. 35.
- (魏略曰：庶先名福，本單家子，少好任俠擊劒。中平末，甞為人報讎，白堊突靣，被髮而走，為吏所得，問其姓字，閉口不言。吏乃於車上立柱維磔之，擊鼓以令於市鄽，莫敢識者，而其黨伍共篡解之，得脫。於是感激，棄其刀戟，更踈巾單衣，折節學問。) Weilue annotation in Sanguozhi vol. 35.
- (始詣精舍，諸生聞其前作賊，不肯與共止。福乃卑躬早起，常獨掃除，動靜先意，聽習經業，義理精孰。遂與同郡石韜相親愛。初平中，中州兵起，乃與韜南客荊州，到，又與諸葛亮特相善。) Weilue annotation in Sanguozhi vol. 35.
- (魏略曰：亮在荊州，以建安初與潁川石廣元、徐元直、汝南孟公威等俱游學，三人務於精熟，而亮獨觀其大略。) Weilue annotation in Sanguozhi vol. 35.
- (時先主屯新野。徐庶見先主，先主器之，謂先主曰：「諸葛孔明者，卧龍也，將軍豈願見之乎？」先主曰：「君與俱來。」庶曰：「此人可就見，不可屈致也。將軍宜枉駕顧之。」由是先主遂詣亮，凡三往，乃見。) Sanguozhi vol. 35.
- (曹公以江陵有軍實，恐先主據之，乃釋輜重，輕軍到襄陽。聞先主已過，曹公將精騎五千急追之，一日一夜行三百餘里，及於當陽之長坂。先主棄妻子，與諸葛亮、張飛、趙雲等數十騎走，曹公大獲其人衆輜重。) Sanguozhi vol. 32.
- (先主在樊聞之，率其衆南行，亮與徐庶並從，為曹公所追破，獲庶母。庶辭先主而指其心曰：「本欲與將軍共圖王霸之業者，以此方寸之地也。今已失老母，方寸亂矣，無益於事，請從此別。」遂詣曹公。) Sanguozhi vol. 35.
- (及荊州內附，孔明與劉備相隨去，福與韜俱來北。) Weilue annotation in Sanguozhi vol. 35.
- (至黃初中，韜仕歷郡守、典農校尉，福至右中郎將、御史中丞。) Weilue annotation in Sanguozhi vol. 35.
- (逮大和中，諸葛亮出隴右，聞元直、廣元仕財如此，嘆曰：「魏殊多士邪！何彼二人不見用乎？」庶後數年病卒，有碑在彭城，今猶存焉。) Weilue annotation in Sanguozhi vol. 35.
- Sanguo Yanyi ch. 35-36.
- Chen, Shou. Records of Three Kingdoms (Sanguozhi).
- Luo, Guanzhong. Romance of the Three Kingdoms (Sanguo Yanyi).
- Pei, Songzhi. Annotations to Records of the Three Kingdoms (Sanguozhi zhu).