Introduction to Yunjin Rhododendron: Yunjin Rhododendron is a large evergreen shrub, about four or five meters high. The Yunjin azalea is called Sara in Sanskrit, and the locals call it the Sara tree. Rhododendron azalea belongs to the Rhododendron family and is a rare tree species unique to my country. The Yunjin Rhododendron trees in Huading Forest Park are all over 200 years old and form a group of ancient trees.