Introduction to historical sites: A dead pine tree on the hillside is the famous "Masuan Pine", named after "Xue Rengui's expedition to the east" where he tied his horses. Since the construction of the paved road into the mountain began, the "Tuan Ma Pine" gradually withered until it died completely. Just from the entangled branches in front of you, you can imagine the majestic style of the past, which makes people sigh endlessly.