This period includes at least 12 months of training, which is perceived as an exam. The students learn to see mistakes, to find them analytically... but also to distinguish between the essential and the inessential. After the training, the trainers are able to recognize and correct even the smallest mistakes in large groups within seconds. Today, after more than 40 years of experience, this knowledge has been multiplied and enables students to be trained faster and better. Boekhoff trains and teaches the subconscious of people. "Everything else takes too long," he explains briefly. "The essential and most important thing about Ving Tsun is explained in the first few hours of training and not in the last 5 minutes after several years..."