Introduction to the ancient ginkgo tree: The ginkgo tree, also known as the Gongsun tree, is the oldest existing plant in the world and is called a "living fossil." There are two ginkgo trees in Longquan Temple, one female and one male. The female tree is 5.1 meters in circumference. It has a history of nearly a thousand years and is a living witness to the thousand-year history of Longquan Temple.