The Path of Survival.

Summary

Xiao Fan contemplates digging a large underground tunnel to allow war generals to enter the imperial capital stealthily. Initial plans for a small tunnel are abandoned due to the impracticality of opening city gates, which require numerous warriors and create significant noise. Instead, he opts for a 5-meter diameter tunnel, despite uncertainties about its success and potential dangers. To mask the noise of excavation, he sets up a training ground for soldiers. After facing challenges with solid ground, he resorts to explosives, successfully creating a large hole. Progress is steady, but logistical issues arise, prompting the construction of a railway for efficient material transport.

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