Map of the Kingdom's Warfare.

Summary

In the early morning, Yuan Gai Su Wen inspected the East City, noting the challenging terrain for siege equipment. He commanded an attack to probe the Sui army's strength, organizing five thousand local troops into formations. As the Goguryeo army prepared, the Sui army, led by Yang Shan Hui, deployed three thousand soldiers to defend, mixing regulars and militia for deception. The Sui catapults inflicted heavy casualties on the advancing Goguryeo troops. Despite suffering losses, the Goguryeo soldiers charged, attempting to mount ladders against the city walls. However, the Sui defenders ignited fires, causing chaos among the attackers. Ultimately, the Goguryeo forces were overwhelmed and ordered to retreat, leaving Yuan Gai Su Wen to reflect on the devastating Sui defenses.

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