The Heaven Dou Empire possessed abundant waterways, the four most important being the Tianling River in the south, the Ice River along the northern frontier, the Sunset River in the east, and the Heaven Dou Yangtze River in the west.
These rivers not only brought life-giving water to the land but also served as vital transportation arteries.
One curious feature was that the other three flowed eastward, while the Heaven Dou Yangtze River alone flowed from east to west.
The Heaven Dou Yangtze River was the pride of the Heaven Dou Empire. Its source lay toward the western end of the Tianshan Snowfield's southern foothills, near the Heaven Dou Mountains. Flowing from east to west, it passed through the junction of the Heaven Dou Mountains and the Lagahanma Mountains, then crossed the Tianling Mountains, becoming a vital passage connecting the Central West—a golden waterway.
The river not only provided the empire with plentiful water but also spurred economic development along its banks, particularly in Oswei Province, which it traversed. Irrigation from the Heaven Dou Yangtze River had made the province a producer of grain and silk.
At the mouth of the Heaven Dou Yangtze River stood the bustling Vast Sea City. Thanks to the convenient transportation the river offered, the city had become the economic and cultural center of the empire's western region, surpassing even Tulip City, the provincial capital in its central region, in importance. Put simply, it could be understood as the Heaven Dou Empire's equivalent of China's "Magic City."
Every year, vast quantities of goods and large numbers of travelers passed through Vast Sea City on their journeys between the empire's Central West, making it a vital bridge linking the west with destinations at home and overseas.
It was worth noting that the Heaven Dou Empire's Western