Introduction to hand-planted locust trees: Pines, cypresses, sycamores, and flowers of the four seasons are widely planted in the courtyard. It is said that the ancient locust tree was planted by Xiang Yu. Although it has experienced more than 2,000 years of ups and downs, the tree has a strange appearance and old branches, it is still lush and tall, making people think of the ancient times. An American botanist even called it "the best Sophora japonica in the world".