（二）攻守兼备性 Achieving both Defense and Offense
咏春拳讲究攻守兼备、守攻同期。在心法、手法方面注重左右兼顾，以最短的距离和时间用寸劲进攻和防守。咏春拳的中线理论讲究在进攻方面要沿中线向对方做最短距离的攻击，防守方面守中线以分水的方法消掉对手最短距离的进攻。“来留去送”心法讲究的是用桥手相接的感觉将对方的力控制住，然后借助方向的改变给对手以还击，这一守一攻是咏春拳典型的打法。“守攻同期”讲的是在消掉对方进攻强力的同时，在可能的范围内发招还击对手，变被动为主动而后发制人。此外，在攻防的时候还要注意以下几点：首先，消手时不能超过防守所需的范围，即对方不能击中便无需消手；其次，不能离开防守所需范围来追接对方的桥手；最后，出手时重心要稳，不需要借助位置来发力。“寸劲”是咏春拳用于攻防的最重要的发力方式，此力短暂且爆发性强，能在短时间、短距离内迸发出较强的杀伤力，在咏春拳的攻防体系中发挥着重要的作用。
Yongchun attends to defense and offense simultaneously.In heart cultivation method and hand technique, it covers both left and right and makes offense and defense with appropriate strength in the shortest distance and time.The midline theory of Yongchun is to attack opponent with the shortest distance in offense and in defense guard the midline with a watershed approach to offset opponent's shortest distance attack.The mental cultivation method of force controlling is to regulate opponent's force by bridge hand connection and then attack others with change of direction, which is a typical fighting of Yongchun.“Making offense while defending” means to make counterattacks within possible range changing from being passive to active while offset opponents’ attack force.Besides, the following points must be taken into account during offense and defense: Firstly, they can not hand over the required range of defense, namely they need not to handle the mishit.Secondly, they can not leave the defense range to chase after opponent's bridge hand.Thirdly, the center of gravity must remain steady when they make moves and do not have to resort to force position.“Appropriate strength” is the most important force-making way in Yongchun offense and defense.The force is brief and explosive and is able to burst out strong lethality in a short time within a short distance, which exerts an important influence in Yongchun offensive and defensive system.