Story
The formation of Populus euphratica forest here depends entirely on the underground channels connecting the water sources of the snow-capped mountains. However, the construction process of culverts is complicated and requires a good understanding of underground waterways, which makes it impossible for Xili people to build them. Fortunately, Hu Yangji had the help of the Han army, and the matter also involved a transaction: the Han general helped the Xuli people dig wells, and the Xuli merchant helped the Han people chase the moon.