Introduction to ancient ginkgo trees: There are two ginkgo trees in Sanqing Pavilion, one of which is in Changchun Guanyuan and is still well protected. The tree is more than 2,100 years old, 24 meters high, with a main trunk of about 7 meters and a maximum girth of 7.7 meters. It requires five people to hug it. It has lush branches and leaves, providing 144 square meters of shade. The legendary tree was planted by Xu Ze, and a monument was erected in the 8th year of Jin Dynasty. It is currently the oldest ginkgo tree in Linyi City. Ten years later, a new shoot was pulled out from the root, and now there is a ginkgo tree in front of the temple. It is 21 meters high, with a diameter at breast height of more than 1 meter, tall and lush.