Introduction to the ancient oak group: There are more than 20 ancient oak groups that are about 150 years old growing on the east slope of Yinxianguan. The tree height is about 12 meters and the diameter at breast height is about 1 meter. It is a unique warm temperate zone in North my country. Representative tree species of deciduous broad-leaved forest. Among them, the famous one is "Jingrong Cliff", which was born on a huge bare rock and is extremely green. "Dragon and phoenix present auspiciousness", which is a long-standing symbol and looks like a dragon and a phoenix. "A stubborn rock nurtures an oak tree." This tree grew on a huge solitary rock, showing the tolerance of the boulder and the tenacity of the oak tree. "Lying oak proud of the snow", this tree is tall and dense, lying on the rocks, and is tenacious.