Exploring Three Kingdoms Geography: The Legendary "Three Rivers City" and the Southern Barbarian Barrier

Brief Introduction

In the grand narrative of Romance of the Three Kingdoms, Zhuge Liang's southern campaign to pacify the Southern Barbarians is a key chapter in stabilizing Shu Han's rear. However, the claim of "Three Rivers City" as a barrier fortress for the Southern Barbarians is not a core place name in the original novel; it is more of a later interpretation of Three Kingdoms geography or a confusion with historical prototypes. This article aims to clarify the true positioning of "Three Rivers City" in literature and history, and analyze the Southern Barbarian defense system.

Core Knowledge Points

1. Name Differentiation: In the original Romance of the Three Kingdoms, the main cities in the Southern Barbarian region include Yicheng, Mianzhu, Yuesui, etc. The key strategic stronghold of "Three Rivers City" does not explicitly appear. This name may originate from historical records of "Three Rivers Qiang" or artistic processing in later games and film/TV works.
2. Geographical Location: Historically, "Three Rivers" often refers to places where rivers converge in the southwest region (such as present-day Sanjiang, Guangxi or related basins in Yunnan), which were ancient ethnic minority settlement areas. In the context of the Three Kingdoms, it represents the complex terrain and tribal power scope of Shu Han's southern border.
3. Strategic Significance: The core function of the Southern Barbarian barrier cities was to block southern tribes from invading north, protecting Shu Han's supply lines and the flank of Jing Province. The purpose of Zhuge Liang's southern campaign was precisely to eliminate this hidden threat and achieve "winning hearts is superior to winning battles."

Connection with Book Content

In chapters 87 to 90 of Romance of the Three Kingdoms, the story of Zhuge Liang capturing Meng Huo seven times is well-known. Although the book does not detail "Three Rivers City," it describes the process of the Shu army crossing dangerous terrains like Pan She Valley and Xi Er River.
* Battle Background: As the Southern Barbarian King, Meng Huo's sphere of influence covered many passes described in the book. These passes functionally equated to "barrier cities" and were the main obstacles for the Shu army's southern campaign.
* Tactical Application: Zhuge Liang utilized terrain advantages (such as the fire attack on Pan She Valley) to conquer Southern Barbarian strongholds one by one. If "Three Rivers City" is regarded as a metonym for this defense system, it symbolizes the blockade line of Southern Barbarian forces against Shu Han's south.
Historical Prototype: Historical records such as Records of the Three Kingdoms* state that Shu Han pacified places like "Yuesui" and "Zangke". The tribal alliances in these areas constituted the actual southern barrier, which geographically overlaps with the literary concept of "Three Rivers."

Conclusion

Although "Three Rivers City" is not a prominent place name in Romance of the Three Kingdoms, its concept reflects the complex situation of Shu Han's southern border during the Three Kingdoms period. Understanding this location helps readers grasp the strategic intent of Zhuge Liang's southern campaign more deeply: it was not only military conquest but also long-term management of the southwestern frontier. When consulting related materials, it is recommended to distinguish between literary adaptation and historical geography to gain more accurate knowledge.