The traditional approach, established in many wing chun schools, includes certain set of blocks.
But it becomes unacceptable in combat p.
The distinct description of blocks with indication of exact parameters (angles, distances) is acceptable for the training process.
These blocks are thoroughly described; the distinct recommendations about observance of hands trajectories, angles of elbows deviation from the central line and relative to trunk, hands distance from the body and so on are given.
The traditional approach, established in many wing chun schools, includes certain set of blocks