Chong Chong knife blade into the stone as a result, different blade angles of the modification, the performance of the lines also vary hylomorphism: Single is here, and possession of the front is.

• 冲刀法由于冲刀入石，刀锋的偏正角度不一，其表现的线条形质也各异：单刀正入，其锋正而藏。