Actually, even Shen Hao, an outsider to military affairs, could figure it out after careful thought. Previously, the Barbarian Race colluded with Pseudo-Evil Sect cultivators, as well as pests in the Ministry of War, all through smuggling across Zhuo Huo Pass via the Ten Thousand Miles Bamboo Sea. This shows that traversing the Bamboo Sea between the two lands is feasible.
Of course, having a dozen or twenty people pass through the Bamboo Sea is entirely different from three thousand marching through it; the latter is dozens or hundreds of times more difficult. But only this possibility explains why the Border Army would gather thirty thousand troops at Xiaochuan and stockpile vast provisions.
How can thirty thousand make it through the peril-laden Bamboo Sea to reach the Barbarian Race? Shen Hao didn't consider the specifics; he knew he couldn't figure it out, but that didn't stop him from speculating on some military strategies using the analysis from the Four Divisions.
