Yanshan is a mountain range located in northern China, stretching across the provinces of Hebei and Beijing. It is known for its scenic beauty, diverse ecosystems, and rich cultural history. The range features several peaks, with the highest being Yanshan Mountain, which reaches an elevation of about 2,200 meters. The area surrounding Yanshan is home to various wildlife and plant species, making it an important ecological zone. Additionally, the mountains have historical significance, as they have been a site for ancient trade routes and military defense. Today, Yanshan attracts tourists for hiking, sightseeing, and exploring its natural landscapes.