老牛舐犊

lǎo niú shì dú

lit. an old ox licking its calf (idiom)

fig. (of parents) to dote on one's children

lǎo

prefix used before the surname of a person or a numeral indicating the order of birth of the children in a family or to indicate affection or familiarity

niú

ox

shì

to lick

calf