Research on the Lia Army Formation in Water Margin: Is it "Hun Tian Xiang" or "Nine Palaces Eight Trigrams"?

Brief Introduction

In the Lia campaign arc of the classical masterpiece Water Margin, the Lia Army deployed a complex formation that left the Liangshan heroes at a loss. In folklore, this formation is often referred to as the "Hun Tian Xiang Formation" (Mixed Sky Image), believed to be arranged according to celestial constellations and unpredictable in its changes. However, from a literary textual research perspective, this name involves a common confusion. This article aims to clarify the true appearance of this formation in the original novel and its critical role in the story.

Core Knowledge Points

1. Analysis of the Formation Name

In Chapter 99 of the original Water Margin, the formation deployed by the Lia Army general Yan Zhaoqing is explicitly recorded in the text as the "Nine Palaces Eight Trigrams Formation". The so-called "Hun Tian Xiang Formation" is more of a popularized name given by later readers due to the formation's involvement with astronomy and constellations, or it stems from a memory confusion with concepts from other novels (such as Zhang Jiao's magic in Romance of the Three Kingdoms).

2. Formation Characteristics

This formation combines Daoist Yin-Yang Five Elements theory with astronomical constellations.

• Complex Layout: Based on the Nine Palaces grid, combined with the eight trigram directions, the troop deployment is interwoven like stars.
• Unpredictable: The enemy finds it difficult to identify the location of the central command; rashly entering it leads to being surrounded.
• Key to Breaking It: It requires guidance from someone proficient in Qimen Dunjia (a form of Chinese divination strategy) to identify the Life Gate and the Death Gate.

3. Cultural Background

While "formation research" did exist in Song Dynasty military affairs, the depiction in the novel carries a strong color of magic and mythology. Author Shi Nai'an uses this to highlight the theme that although the Liangshan heroes are brave, they still need the help of wise strategists when facing profound tactics.

Connection to Book Content

Plot Background

After the Liangshan heroes accepted imperial amnesty, they were ordered to campaign north against the Lia Kingdom. The Lia Army held firm in their cities, and General Yan Zhaoqing came out to challenge. He was not only highly skilled in martial arts but also proficient in military strategy, deploying this formation to trap Song Jiang's army.

Breaking Process

Initially, the Liangshan heroes attempted a strong attack without success, suffering heavy casualties. At a critical moment, a Master (in some versions implied to be a descendant of Zhuge Liang or a hermit) proficient in astronomy and geography guided Song Jiang, pointing out the core of the formation. Song Jiang followed the plan, commanded the army to cut in through the "Life Gate," and struck directly at the heart, ultimately defeating the Lia Army and forcing the Lia Kingdom to seek peace.

Literary Significance

This plot not only enriches the details of the Lia campaign but also echoes the tradition of "wisdom-based tactics" in Water Margin (such as the "Stealing of the Birthday Gift"). It indicates that the Liangshan army was not just a symbol of brute force but was also developing the strategic literacy of a regular army, laying the groundwork for subsequent campaigns such as the one against Fang La.

Conclusion

Although "Hun Tian Xiang Formation" is not the standard name in the original Water Margin, it serves as a substitute name used by readers for the Lia Army's "Nine Palaces Eight Trigrams Formation," vividly reflecting the mystery and power of the formation. Understanding this detail helps us understand the original plot more accurately, avoid the mis transmission of literary common knowledge, and simultaneously appreciate the charm of ancient Chinese military culture.