Badaling, located in Beijing's Yanqing District, is the best-preserved section of the Ming Dynasty Great Wall. Since ancient times, it has been a strategic point known as the "key to the northern gate." Constructed of granite stone slabs, its walls stretch for 23 kilometers, rising over eight meters and capable of supporting five horses galloping side by side. Its elaborate defensive system of watchtowers, battlements, and urn walls, forming a majestic dragon-like structure amidst the mountain ridges, has earned it the nickname "Nine Fortresses of the World." Nearly five kilometers of the section is currently open to the public, housing facilities such as the Great Wall Museum and the introduction of technologies like drone delivery to enhance services. It has become a landmark for Chinese and international visitors to experience the grandeur of Chinese history.