不亦乐乎 (bú yì lè hū): Литвы, разве это радость? (цитата из Конфуция)

On Grandma's 80th birthday, more than thirty relatives came to the house. Mom was bustling around the kitchen with great delight, without even a moment to sit down and sip tea.

After retiring, Grandpa goes to the park every morning to play chess with old friends and practices calligraphy at home in the afternoon; his days are full and thoroughly enjoyable.

The children built sandcastles and collected shells on the beach, having a wonderful time, and only left reluctantly when the sun set.

To prepare for the school anniversary performance, the classmates rehearsed joyfully in the auditorium; although they were sweating from exhaustion, no one complained.