qì​zhàng

to weep when beaten by one's mother's cane

泣杖 qì​zhàng
to weep when beaten by one's mother's cane
(literary) an expression used to describe a child's deep devotion to their parents; it refers to the story of Han Boyu, who wept while being beaten by his mother not because of pain, but because her weak blows made him realize how old and frail she had become