This is an undergraduate level introductory course in soil mechanics conducted in Cantonese. Soil is an important engineering material which plays an important role in infrastructure construction. Soil mechanics is a sub-discipline of geotechnical engineering. It uses the principles of mechanics, hydraulics and to some extent chemistry to solve civil engineering problems relating to soil. Other sub-disciplines of geotechnical engineering include rock mechanics, foundation engineering, rock engineering, geological engineering, pavement design and materials, and geosynthetics.