The Kangxi emperor asked questioned and as answered by Kong Shangren as the emperor requested Kong to guide him through the Kong cemetery and temple. He visited the remains of the Walls of Lu, Apricot Terrace, Hall of the Great Ensemble, a hall that had engravings depicting Confucius's life events and the statue of Confucius in the temple. The emperor paid a visit to the tomb of Confucius past the Duke's manor's gate after exiting the temple and then they went to go to the cemetery out the city gate from the temple so that the commoners started prostrating before them. The cemetery to the north of Qufu was called Kong Lin (Kong Grove) since it was forested and large. Confucius's tomb was at the center of the cemetery. Kong descendants over dozens of generations were interred in the cemetery. The cemetery held great symbolic, collective and familial importance for members of the Kong family. There are more than 4,000 tombstones that can be identified in the cemetery in 183 hectares of forests under protection. It was illegal to cut down trees for wood or to pillage so a wall was built around the 3,000 mu cemetery in the late 17th century. The cemetery kept expanding to bury more and more Kong family members, located towards the Kong temple's north by over one kilometre with no other cemetery like it in historical scope or size in China. The Dukes were buried in the cemetery. The same Family Temple rituals were carried out at the cemetery three times a year at the tombs of the dukes as offerings were made. The vast history and size of the cemetery made it difficult to carry out rituals of giving ancestral offerings and maintaining graves.