Six in the second place means:
Two exceptional situations are instanced here. In the temple of ancestors, where alternation of generations prevails, the grandson stands on the same side as the grandfather. Hence his closest relations are with the grandfather. The present line designates the grandson's wife, who during the sacrifice passes by the ancestor and goes toward the ancestress. This unusual behavior is, however, an expression of her modesty. She ventures rather to approach the ancestress, for she feels related to her by their common sex. Hence here deviation from the rule is not a mistake.
Another image is that of the official who, in compliance with regulation, first seeks an audience with his prince. If he is not successful in this, he does not try to force anything but goes about conscientious fulfillment of his duty, taking his place among the other officials. This extraordinary restraint is likewise not a mistake in exceptional times. (The rule is that every official should first have an audience with the prince by whom he is appointed. Here the appointment is made by the minister.)