Books and DVDs that contain or focus on Wing Chun's second form, Chum Kiu or "the searching bridge".
Chum Kiu is the second form in the Wing Chun Kung Fu system. This form teaches the dynamic application of the techniques learned in Wing Chun's first form, Siu Lim Tao. While the first form teaches the correct structure of the attacks and defensive movements, it is in Chum Kiu that the student learns to "seek the bridge" and use both hands simultaneously, such as one hand defending while the other attacks. Chum Kiu teaches stepping and footwork, along with Wing Chun's specialized kicking method and the generation of power through the correct method of using the entire body in stance turning (Yiu Ma).
As Gary Lam student, Sifu LeBlac says in his interview
, "Chum Kiu is taking the shapes and concepts of Siu Nim Tao and putting them in motion; it introduces footwork, changing angles and moving the entire body as a unit. It develops the connection of the lower body to the ground and the hip and elbow connection, making a bridge, finding the new centerline of a moving target and controlling multiple targets" Without these skill sets properly mastered, the rest of the system is rendered useless.