Wow, saying so many place names in one breath feels like reciting a tongue twister! Hanzhong, Bajun, Guanghan, Shujun, Jianwei, Xiangkang, Yuexi, Yizhou Yongchang, and the subordinate states of Guanghan, Shujun, and Jianwei... These are all ancient place names, and listening to them gives a strong sense of history, as if we have suddenly traveled back to the Three Kingdoms period.
Let's go through them one by one—where are these places located now? Hanzhong, everyone knows, is in the southern part of Shaanxi Province; Bajun is roughly around present-day Chongqing; Guanghan is near Deyang City in Sichuan Province; Shujun refers to the ancestral region of Chengdu in Sichuan; Jianwei is also in Sichuan Province, in Leshan City; Xiangkang is in present-day Guizhou Province; Yuexi is in Liangshan Yi Autonomous Prefecture in Sichuan Province; and Yizhou Yongchang—this "Yongchang" is the name of a county, and its specific location overlaps with Yizhou (Yizhou, a historical province, has a large territory that includes most of the Sichuan Basin).
Finally, the terms "Guanghan Shuguo," "Shujun Shuguo," and "Jianwei Shuguo" refer to subordinate states; simply put, these places were under the jurisdiction of the Han Dynasty, but they also retained a certain degree of autonomy.
In conclusion, these place names all point to the ancient southwestern region, mainly concentrated in present-day Sichuan, Chongqing, Guizhou, and other areas. Just think about it—these places were once part of the Han Dynasty's territory, witnessing immense historical changes! "The road to Shu is hard, harder than climbing to the sky," this line of poetry likely reflects the challenging transportation conditions in these areas at that time. These place names are like historical coordinates, outlining the map of the ancient southwestern region and helping us envision that period of history more vividly.
