Introduction to the wild elm tree: The wild elm tree, also known as Yunsang, lives tenaciously in rocks. In 1987, it was identified by forestry experts that this tree has survived for more than 600 years and was listed as an ancient and valuable tree in Suiping County. Its tenacious vitality is said to have attracted the admiration of many people and the attention of botanists. The roots of this tree can secrete a liquid that can react chemically with rocks and dissolve trace elements in the rocks. It maintains its life by absorbing these very few trace elements and rainwater. It dies off part of its branches every year to maintain the growth of new life. It has been like a natural bonsai for a long time.