Before I go to sleep I have one more question regarding this video clip .Before I ask a question I have to say I have some years in Shotokan karate and I am familiar with that art . Let's say I am wrong and that is wing chun , is , well that was called in Shotokan karate "combat Zenkutsu dachi " stance prevalent stance in wing chun system ? Or it is used only for heavy bag training ?
I don't know that terminology. But if you mean the "front stance" he is using with weight distro 50/50, both feet and knees pointing forward, spine straight and centered over the pelvis....yes! This is a common stance in Wing Chun. Just because he doesn't have his weight shifted back over his rear leg with his Man Sau hand stuck way out in front doesn't mean it isn't a Wing Chun stance! This is a fighting stance, not just for hitting a bag!