The "Three Mountains Alliance" in Water Margin: A Key Turning Point in the Expansion of Liangshan's Power

Brief Introduction

The "Three Mountains Alliance" is a militarily strategic action of great significance in Water Margin, serving as an important milestone in the expansion of the Liangshan heroes' scale. It refers to the event where Liangshan Marsh joined forces with Erlong Mountain, Qingfeng Mountain, and Taohua Mountain (the four factions often collectively referred to as the "Three Mountains") to jointly attack Qingzhou Prefecture, eventually merging and submitting to Liangshan Marsh. This event occurred after Song Jiang joined the mountain, marking Liangshan's transition from a mere gathering of outlaws to a regular armed force, laying a solid military foundation for the subsequent acceptance of imperial amnesty.

Core Knowledge Points

1. Participating Forces: Primarily included Erlong Mountain (Lu Zhishen, Yang Zhi, Wu Song, etc.), Qingfeng Mountain (Yan Shun, Wang Ying, Zheng Tianshou, etc.), and Taohua Mountain (Li Zhong, Zhou Tong, etc.). These three mountain strongholds were originally independent, but their heroes shared a common spirit.
2. Campaign Target: Qingzhou Prefecture. Qingzhou was a crucial military stronghold in Shandong at the time. The defending commander, the Mu Rong family (Mu Rong Yanda), was powerful and had connections with court officials like Gao Qiu, making them a thorn in Liangshan's side.
3. Key Trigger: The capture of Yan Qing. Yan Qing was originally a Liangshan hero; while passing through Qingzhou while searching for his father, he was framed and imprisoned by the Mu Rong family, becoming the direct cause of this joint military operation.
4. Final Result: The forces from the three mountains breached Qingzhou, killed the Mu Rong family, and subsequently all joined Liangshan Marsh. The number of Liangshan heroes increased significantly, and their top-tier combat power was substantially enhanced.

Connection to the Book's Content

In Chapters 59 to 60 of the original Water Margin, the plot revolves closely around the capture of Yan Qing. Yan Qing was designed to be captured by the Mu Rong family while seeking his father in Qingzhou. Upon learning this, Liangshan Marsh sent Song Jiang to lead a rescue mission, while also contacting old acquaintances from Erlong Mountain and Taohua Mountain. Since Qingfeng Mountain and Taohua Mountain were geographically close and had long-standing ties with Erlong Mountain, the three parties quickly formed an alliance.

They employed a strategy of coordinated attack from inside and outside to breach the city of Qingzhou. This battle not only rescued Yan Qing but also gathered heroes who had been scattered across various locations. The addition of top-tier combat power such as Lu Zhishen and Yang Zhi from Erlong Mountain greatly improved Liangshan's military hard power. Afterward, Liangshan officially formed a structure with Song Jiang as the leader and heroes from all paths gathered together. After this event, Liangshan's power reached its peak, but it also laid the groundwork for future amnesty and division, serving as one of the key clues to understanding the tragic ending of the entire book.

Literary and Historical Significance

From a literary perspective, the "Three Mountains Alliance" embodies the spirit of "Acting on Behalf of Heaven" in Water Margin, emphasizing the importance of unity and cooperation. From a narrative structure perspective, it is a turning point in the development of the Liangshan cause. Through this event, the author Shi Nai'an consolidated scattered hero storylines into the main Liangshan plotline, completing the final assembly of characters and preparing the personnel reserve for the subsequent "Grand Alliance" and acceptance of amnesty. It is an indispensable core chapter for studying the plot structure of Water Margin.