Cases of four-sided irregular spirit fortresses

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Four-sided irregular spirit fortresses, also known as 'Spiritual Fortresses', are architectural structures commonly found in Chinese traditional gardens and parks. These structures are designed to embody spiritual and philosophical ideas, often with unique, non-conventional shapes that symbolize strength, stability, and protection. Cases of such structures typically involve the design, construction, and historical significance of these forts. They are often used for cultural and historical preservation purposes and can be found in various regions of China, each with its own unique architectural style and cultural context.