The Brush Knee and Step Forward (左右搂膝拗步 Zuoyou Lōuxī Àobù), is a relatively common posture found in t'ai chi ch'uan. Typically performed from Gong Bu stance, mantains the forward hand at forehead/shoulder height while the lower hand remains below waist height.
Brush Knee and Step Forward is one of the first movements/postures learned by the beginners, due to it's simplicity.
The Movement follows the Tsai (Plucking) and You Pu (Right Step) techniques.