What does the vast Kunlun mean?

It means the towering Kunlun Mountain.

Kunlun Mountain (Central Asia Mountain Range)

Kunlun Mountain, also known as Kunlun Xu, is the first mountain in China, the mountain of ten thousand ancestors, Kunlun Mountain or Yushan Mountain. The mountain system in Central Asia is also the backbone of the mountain system in western China. It starts from the eastern Pamirs in the west, crosses Xinjiang and Tibet, and extends to Qinghai, with a total length of about 2,500 kilometers, an average elevation of 5,500-6,000 meters, a width of 1.30-200 kilometers, and a total area of more than 500,000 square kilometers. As the "ancestor of thousands of mountains", Kunlun Mountain has a prominent position in the cultural history of the Chinese nation. The ancients called Kunlun Mountain the "Long Mai ancestor" of China.

According to ancient mythology, there lived a fairy named "Queen Mother of the West" in Kunlun Mountain, and she was served by a leopard head and two bluebirds. This is a problem. Taoism is the true god, and Dong is divided into men and women to cultivate immortals.