Posture, for a seasoned Young Master, is actually a profound study. Too upright appears rigid; leaning entirely against the chair back seems lethargic; sitting on just the front edge of the chair comes off as constrained, while occupying the whole chair is too casual. When legs are spread apart, hands supporting the knees suggest a rough demeanor, while arms folded across the chest can indicate a lack of confidence. In short, in different situations, it's incredibly difficult to get posture just right.