The Piercing Cloud taiji school delivers a unique analytical study of Chen Taiji. Based on austere martial training, Yilu is taught from the ground up in a highly detailed manner, emphasizing the role of technique as a tool to study principles, rather than an end unto itself. Emphasis is also on the use of Taiji principles in life outside the practice hall, both physically and interpersonally. Weapons work is also a central study in the Piercing Cloud School.