Ziyou states mourning rituals only need sincere, full grief, no excessive formalities or unbridled sorrow. This embodies Confucian moderation: genuine inner grief matters most, yet emotions must stay restrained by reason to avoid harming oneself.
Confucius eliminated four faults: he did not speculate without evidence, did not insist on absolute certainty, did not cling to rigid opinions, and did not prioritize his own self.
If you muse on the flavor of food after you have eaten your fill, the feeling of relishing different flavors vanishes.