What is cliff stone carving?

Calligraphy, statues or rocks carved on cliffs and stone walls. Cliff stone carving is an ancient stone carving art in China, which refers to calligraphy, statues or rock paintings carved on cliff walls. Cliff stone carvings originated in ancient times, and as a way of recording, they prevailed in the Northern Dynasties until the Sui, Tang, Song and Yuan Dynasties. Cliff stone carvings are not only rich in historical connotation and value, but also inscribed by political or cultural celebrities, with exquisite calligraphy and precious artistic value.