Map of the Kingdom's Warfare.

Summary

Cheng Yaojin expresses frustration after being conned into buying a fake purple worm chrysalis. Zhang Xuan learns from Zhao Dan that the court will send troops to escort merchant convoys north, and he decides to join the expedition. As they travel, they encounter the Zihe River and the Great Wall, with tensions rising as they leave the safety of the wall. Zhang Xuan and his companions discuss the potential dangers of their journey, particularly regarding Liu Wuzhou's suspicious involvement. Chai Shao warns Zhang Xuan about possible ulterior motives behind Liu Wuzhou's actions, suggesting that the journey could be a trap. Zhang Xuan decides to take proactive measures by sending Cheng Yaojin to scout ahead, believing his clumsiness is a cover for his sharpness.

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