Direction sign spiritual fortress

Quick answer：

The term '导示牌精神堡垒' refers to a type of directional sign or marker that symbolizes a strong, enduring spirit or a significant landmark. These signs are often found in areas with cultural or historical significance, and they serve as a source of inspiration or guidance for visitors. They may take the form of artistic installations, large metal signs, or other architectural features designed to stand out and convey a powerful message.