Introduction to Huangchangshi: Huangchangshi evolved from the "Huangchangticuo" in the Spring and Autumn Period. In the Eastern Han Dynasty, it was difficult to harvest cypress, so stone was used instead. This special stone used to build emperors' tombs was called yellow intestine stone. The tomb of King Pengcheng uses a large number of yellow intestine stones, with an area of ​​17 meters from east to west and 20 meters from north to south. Each piece is 93-95 cm long, 95 cm high and 37 cm high.