Map of the Kingdom's Warfare.

Summary

Xiao Yuan Si faces intense questioning under the royal seal of Wang Yin, torn between curiosity and fear of Qin Wang's wrath. He proposes to open one or two boxes to appease the situation, and General Liu Lan Cheng reluctantly agrees. The chosen boxes reveal gold ingots, indicating the importance of the cargo being guarded by cavalry. As tensions rise, Liu Lan Cheng executes a surprise attack, overwhelming the Tang soldiers guarding the city. In the ensuing chaos, Xiao Yuan Si confronts Liu Lan Cheng but is swiftly defeated and killed. The fall of Wu Guan opens the southern gate of Guanzhong, prompting panic in Chang'an as the Sui army advances towards Shang Luo County. Li Yuan, feeling the pressure from the losses, convenes his officials to discuss countermeasures. Chen Shuda and Liu Wenjing suggest that the situation may not be as dire as it seems, but Li Yuan remains concerned about the strategic implications. Li Shentong offers to lead troops to reclaim Shang Luo County, but Li Jian Cheng cautions against rushing into battle without understanding the enemy's strength. He proposes a more strategic approach, suggesting to recall troops from outside to flank the Sui army. The ministers agree with Li Jian Cheng's plan, and Li Yuan decides to implement it, sending orders to reclaim Shang Luo County.

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