In the second year of Yuan Wenzong to Shun (A.D. 133 1), Confucius specialized in forest walls and built forest gates. In the tenth year of Hongwu in the Ming Dynasty (A.D. 1684), Kong Lin expanded to 3,000 mu. In the eighth year of Yong Zhengdi (A.D. 1730), Kong Lin was overhauled, and all kinds of gates and workshops were repaired at a cost of 25,300 yuan, and special personnel were assigned to guard them. According to statistics, since the Han Dynasty, Kong Lin has rebuilt and increased 13 times, planted trees 5 times and expanded forest land 3 times. The wall around Kong Lin is 7.25 kilometers long, more than 3 meters high and about 5 meters thick, with a total area of 2 square kilometers, which is much larger than Qufu City. As a family cemetery, Kong Lin has been buried continuously for more than 2000 years. Here, we can not only inspect the tombs in the Spring and Autumn Period, but also research the tombs in the Qin and Han Dynasties, and also study the political, economic and cultural development and the evolution of funeral customs in China. 196 1 year, the State Council was announced as the first batch of national key cultural relics protection units. "The ancient tomb is thousands of years old, and the forest is cold in May." There are more than 654.38 million trees in Kong Lin. According to legend, after the death of Confucius, "disciples planted strange trees all around, so there were many different trees, and the Lu people were unknown from generation to generation." Today, some trees in Konglin still cannot be named by people. Among them, cypress, juniper, oak, elm, locust, kai, park, maple, poplar, willow, sandalwood, privet, five flavors, cherry blossoms and other trees are intertwined and flourishing; Hundreds of plants such as wild chrysanthemum, Pinellia ternata, Bupleurum chinense, Pseudostellaria heterophylla and Ganoderma lucidum also win glory according to the times. Kong Lin is a natural botanical garden.
"There is no way to see the broken monument in the deep tree." There are many stone tablets and stone tools in Konglin. In addition to a number of famous Han steles moved into the Confucius Temple, there are tombstones inscribed by famous calligraphers in Ming and Qing Dynasties such as Li Dongyang, Yan Song, Weng Fanggang, He and Kang Youwei. Therefore, Konglin can also be called a veritable forest of steles.