Purple Mountain Observatory is a major astronomical research facility located in Nanjing, China. Established in 1958, it is known for its advanced telescopes and research in various fields of astronomy, including astrophysics and planetary science. The observatory plays a significant role in both national and international astronomical collaborations. The observatory is situated on Purple Mountain, which provides an ideal location for observing celestial objects due to its elevation and relatively low light pollution. It is home to several telescopes, including optical and radio telescopes, enabling scientists to conduct a wide range of astronomical studies and contribute to our understanding of the universe.