Underground courtyard fence design refers to the planning and construction of fences or barriers around下沉式庭院, which are typically located at ground level or slightly below it. These designs are important for security, privacy, and aesthetics. They can be made from various materials such as wood, metal, or glass, and may incorporate modern or traditional architectural styles. The design should consider factors like the surrounding environment, the purpose of the courtyard, and the desired level of security or privacy.