Shangyong is a strategically placed town whose garrison becomes a test of loyalty when Guan Yu is besieged at Maicheng. Its commanders, Liu Feng and Meng Da, refuse to send help; later, when Liu Feng flees there from a battle with Meng Da, he finds it already surrendered to Wei. The town thus links two turning points: the abandonment of Guan Yu and the collapse of Liu Feng’s own position.

Position in the Crisis at Maicheng

When Guan Yu’s forces disintegrate around Maicheng, he and a remnant of roughly three hundred men retreat behind its gates. Liao Hua slips through the siege to reach Shangyong and ask for reinforcements, warning that delay will doom Guan Yu. His appeal makes the town’s potential role plain: it is the nearest named source of help in the episode, while the besieged force has little prospect of holding out until troops can arrive from Shu.

The Refusal to Send Relief

Liu Feng, who calls Guan Yu his uncle, asks Meng Da what they should do. Meng Da argues that Wu already holds Jingzhou, Guan Yu has only Maicheng, and Cao Cao is advancing with a much larger army. Their own small force, he says, cannot safely intervene between two powerful enemies. He advises Liu Feng to claim that the newly secured town needs to retain its troops until it has gained the confidence of the local people.

The next day the two men tell Liao Hua they will send no soldiers. Liao Hua pleads, but they hold to their decision, comparing a possible relief effort to throwing a glass of water on a burning wagon. He leaves for Chengdu after realizing he cannot persuade them. The refusal leaves Guan Yu without the relief he had sought and adds a concrete political choice to the wider military collapse around Maicheng.

From Refuge to Loss

Later, the decision returns as a charge against Liu Feng. Xuande’s court considers punishing both him and Meng Da for failing to rescue Guan Yu, and Liu Feng is ordered to govern Mianzhu so the two cannot coordinate. Meng Da, reading this as a sign of danger, defects to Cao Pi. Cao Pi, who doubts the newcomer’s loyalty, orders him to prove himself by fighting Liu Feng and bringing back his head.

When Liu Feng reaches Shangyong after escaping the ambush set during that confrontation, the town has fallen: its governor has surrendered to Wei. He flees onward to Fangling, only to find that this town, too, has been taken. With barely a hundred men, he eventually returns to Chengdu and asks Xuande for forgiveness. Xuande orders his adopted son executed, despite Liu Feng’s explanation that he had not gone over to Wei. Only afterward does Xuande learn that Liu Feng had refused Meng Da’s invitation to desert because he would not betray the bond between uncle and nephew or father and son.

Narrative Significance

Shangyong’s importance rests less on a depicted battle for the town than on what its garrison does—and later fails to do. At Maicheng, it is a possible avenue of rescue; the decision to keep its troops in place helps make that rescue impossible. In Liu Feng’s later flight, the surrendered town becomes evidence that the political and military situation has moved beyond his control. Its two appearances therefore bind a contested question of duty to the changing map of power: first, whether to risk a small force for Guan Yu, and then whether any refuge remains for Liu Feng.