Karesansui sketch master model

Quick answer：

Karesansui, also known as dry landscape gardening, is a form of Japanese garden design that uses gravel, rocks, and sometimes trees and moss, but no water. The 'sketch master model' likely refers to a masterful representation or a prototype of a karesansui garden. In this context, it could be a scaled-down version used for design study or a large-scale installation showcasing the principles of karesansui. These gardens are known for their minimalist beauty and are deeply rooted in Zen Buddhism, representing the natural world in a simplified manner.