Map of the Kingdom's Warfare.

Summary

General Du Yun Si leads a 10,000-strong army to Liu City, where Governor Yang Shan Hui welcomes them. The reinforcements boost morale and restore defense capabilities against the Goguryeo forces. The Sui army, under Yang's command, prepares for battle by repairing defenses and creating new weapons, including a catapult designed to launch poisoned darts. Yang and Du Yun Si discuss the treatment of militia soldiers and the need for further reinforcements. Du Yun Si reveals that an additional 40,000 troops are on their way, including General Pei's cavalry, ensuring Liu City's safety. Meanwhile, scout cavalry led by Sun Ying investigates the area and encounters Sumo Mohe tribesmen who warn of the Goguryeo army's advance, urging Liu City to prepare its defenses.

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