Steles are found at nearly every significant mountain and historical site in China. The First Emperor made five tours of his domain in the 3rd century BC and had Li Si make seven stone inscriptions commemorating and praising his work, of which fragments of two survive. One of the most famous mountain steles is the high stele at Mount Tai with the personal calligraphy of Emperor Xuanzong of Tang commemorating his imperial sacrifices there in 725.