The Correct Meaning states: 'Duì means pleasing' glosses the hexagram name.
'Firm in the center and yielding on the outside, pleasing with advantage in persevering' explains the meaning of 'The Joyous: prosperity, advantageous to persevere' based on lines Two and Five holding firmness in the center, and Six at the Top and Six in the Third Place residing yieldingly on the outside.
Though yielding and pleasing on the outside, inner virtue is firm and upright, so one does not fear depraved flattery. Though firm and upright within, outward conduct is yielding and pleasing, so one does not fear invasive tyranny.
Precisely because it is firm in the center and yielding on the outside, inside and outside complement each other, achieving pleasing prosperity and advantage in persevering. The Correct Meaning states: Broadly clarifying the meaning of pleasing, it unites Heaven and humanity.
Heaven possesses firm virtue yet employs yielding restraint, remaining firm without losing its pleasing nature. Now, pleasing with advantage in persevering complies upward with Heaven.
The human heart rejoices in gracious favor; being able to please people with favor responds downward to humanity.
The Correct Meaning states: From 'Pleasing in leading the people, the people forget their toil' downward, it praises the results achieved through pleasing, and also elaborates the method of responding to humanity: first soothing the people with joy, and then setting them to work, the people will exert all their strength and forget the toil of labor; hence 'Pleasing in leading the people, the people forget their toil.'
'Pleasing in confronting difficulties, the people forget their death': first comforting and encouraging the people with joy, and then sending them into danger, the people will dedicate their lives and forget the death of braving danger; hence 'Pleasing in confronting difficulties, the people forget their death.'
When pleasing is extended to people, its effects are such; is it not truly the greatness of pleasing that can inspire and encourage the people? Therefore it is said: 'So great is pleasing that the people are encouraged!'