Penjing (literally "tray scenery"), also known as penzai (literally "tray plant"), tray landscape, potted scenery, potted landscape, or miniature trees and rockery, is the ancient Chinese art of depicting artistically formed trees, other plants, and landscapes in miniature. Penjing generally fall into one of three categories: Tree Penjing, Landscape Penjing & Water and Land Penjing.
Penjing with Rocks - Chinese 'bonsai' are known as Penjing. They often include the use of rocks and stones in their design. When using rocks, they may be a plant with root over rock, rocks in landscape or even rocks alone!... The Art of Penjing: A Chinese Renaissance... http://www.artofbonsai.org/feature_articles/penjingrenaissance.php