Zhang Song's mission to Xuande

Zhang Song's mission to Xuande converts a failed embassy to Cao Cao into a consequential offer: Zhang urges Xuande to take Shu, and supplies maps to show how. The episode turns diplomacy into an opening for territorial expansion, while making the contrast between Cao Cao’s military prestige and Xuande’s reputation for benevolent rule central to Zhang’s choice of whom to serve.

The mission to Cao Cao

Liu Zhang sends Zhang Song to Xuchang with gifts and a diplomatic purpose: to honor Cao Cao and encourage an attack on Zhang Lu, which would help shield Shu from invasion. Zhang Song also secretly gathers maps of Shu before setting out. Spies report his journey to Kong Ming, who sends watchers to follow what happens next.

The audience proves difficult to obtain. Cao Cao has become so confident in his standing that he ignores Zhang Song’s repeated attempts to meet him; only after Zhang Song bribes servants does he gain an audience. Cao Cao opens by asking why Liu Zhang has failed to pay tribute. Zhang answers that bandits make the roads unsafe. When Cao Cao claims to have secured the country, Zhang points to Sun Quan in the south, Zhang Lu in the north, and Xuande to the west, each with more than one hundred thousand men. His argument is pointed: Cao Cao’s assertion of order does not match the divided political landscape.

Cao Cao already dislikes Zhang Song’s appearance, and the bluntness of his answer worsens the encounter. Cao Cao leaves without further discussion. When servants criticize Zhang for failing to show proper deference, Zhang replies that people from Shu do not bend and scrape. Yang Xiu, a first secretary to Cao Cao, is intrigued rather than offended and invites Zhang to speak with him in his library. There Zhang describes Shu’s difficult approaches by river and road, its productive land, and the learning and ability of its people.

A rebuke that closes one door

Yang Xiu is impressed by Zhang Song’s exceptional memory and offers to intercede with Cao Cao. The next day, Cao Cao agrees to meet Zhang while reviewing his troops. The display of military force gives Zhang another opportunity to contrast the two rulers’ claims. Asked whether Shu has troops like these, he answers that it does not, because it governs through benevolence and justice.

Cao Cao responds by boasting of his army’s victories. Zhang counters with reminders of Cao Cao’s setbacks: his defeat at Red Cliffs, his escape at Tong Pass, and his flight from the archers by the Wei River. Cao Cao becomes so angry that he orders Zhang’s execution. Yang Xiu points out that Zhang is an envoy of another state, and Cao Cao relents, but Zhang is expelled from the palace. The mission has failed on its official terms, and Cao Cao’s treatment of him has instead exposed the gulf between Zhang’s view of worthy government and the powerholder he was sent to praise.

From failed embassy to chosen allegiance

Preparing to leave, Zhang concludes that he has one remaining way to fulfill his purpose: visit Xuande. He has heard of Xuande as a man of benevolence and justice, and the welcome he receives confirms that this reputation shapes how Xuande’s side conducts diplomacy. Zhao Zilong meets him at the border with an official escort of five hundred cavalry. In Jingzhou, a hundred men greet him at his hotel, and Guan Yu welcomes him formally and arranges a banquet.

The next day, Zhang Song and Guan Yu ride to meet Xuande. Xuande, Kong Ming, and Pang Tong dismount to greet their visitor. During the banquet, they discuss how precarious Xuande’s hold on Jingzhou is and Sun Quan’s demands for its return. Zhang invokes Xuande’s imperial lineage and asks whether he might one day ascend the throne as a legitimate heir; Xuande quietly defers. Three days later, as Zhang prepares to depart, their discussion again turns to the uncertainty of Xuande’s territorial position. Zhang’s offer addresses that vulnerability directly.

The proposal to take Shu

Zhang argues that Liu Zhang is an unworthy ruler of Yizhou: weak, unable to make proper use of capable advisers, and threatened by Zhang Lu’s rebellion in the north. He says the people want a better ruler. His own embassy, he explains, has shown him that Cao Cao is ambitious and unable to work with worthy people or draw on wise counsel. He therefore urges Xuande to take the Riverlands, beginning as though he were moving against Zhang Lu and then securing all of Shu. Zhang promises to assist him.

Xuande objects that he cannot attack a member of the same imperial family. Zhang counters that another power may seize Shu first, leaving Xuande to regret his hesitation. When Xuande raises the difficulty of Shu’s mountains and roads, Zhang produces the maps he had secretly collected. They make his proposal more than an abstract appeal: he can show a route into the region and promises support from his friends there.

Xuande tells Zhang that he will be rewarded if the hills remain green and the rivers continue to flow. Zhang refuses payment, saying that meeting a wise and benevolent lord was enough to make his actions necessary. The exchange expresses a personal allegiance, but the maps and promised assistance also give that allegiance practical political force. Back in Yizhou, Zhang shares his plans with Fa Zheng and Meng Da; they agree and devise a way to be sent as envoys to Jingzhou. Zhang then reports to Liu Zhang that Cao Cao is dangerous and recommends seeking Xuande’s help against both Cao Cao and Zhang Lu. His mission has thus opened a path to Xuande while allowing him to present the proposed alliance to Liu Zhang as a defensive measure.

Significance

Zhang Song’s embassy is a turning point in Xuande’s prospects because it links his precarious position in Jingzhou to an opportunity to acquire Shu. The sequence hinges on two contrasting forms of political authority: Cao Cao’s conspicuous military power, which Zhang challenges by naming its defeats, and Xuande’s reputation for benevolence and justice, which draws Zhang’s trust. Yet the offer is not simply a declaration of admiration. Secret maps, local allies, Shu’s vulnerable ruler, and difficult geography make it a concrete proposal for expansion. The episode also sets a limit on Xuande’s stated reluctance: his objection rests on kinship and political principle, while Zhang’s warnings and practical intelligence press him toward action.