This is a unique decorative object resembling a small dagger or ritualistic blade, crafted from a dark-toned metal, possibly bronze or iron with a dark patina. One side features a detailed Bagua (Eight Trigrams) symbol surrounding a Yin-Yang motif, a significant symbol in Daoist cosmology and Feng Shui. The other side displays a pattern of dots connected by lines, representing constellations or a celestial map. The handle area has a stylized cloud or Ruyi head design with a small loop for hanging, suggesting it functions as a charm, talisman, or decorative piece rather than a functional weapon. It has an aged, rustic appearance, indicative of its vintage nature.