What are the stone carvings in the ancient calligraphy art in China? What scope does the content cover?

Stone carving is an important part of ancient Chinese calligraphy art, which is mainly carved on steles, inscriptions, epitaphs, cliffs, buildings, portraits and statues, among which inscriptions and epitaphs are more common. Its written content covers politics, economy, philosophy, history, literature, culture, religion, art and science in different historical periods, covering almost any field of human activities.