Under the guidance of Dr. Gen-hua Shi, this website is to provide a platform for everyone who conducts research and applications in the fields of Block Theory, Discontinuous Deformation Analysis (DDA), Numerical Manifold Method (NMM). Dr. Shi is willing to share his research results and codes with everyone. One can ask questions through this website. We will organize a pool of consultants and have our consultants help solve the problems. We wish everyone a great success in the engineering computation!