老王賣瓜，自賣自誇

every potter praises his own pot (idiom) / all one's geese are swans

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 / old (of people) / venerable (person) / experienced / of long standing / always / all the time / of the past / very / outdated / (of meat etc) tough

king or monarch / best or strongest of its type / grand / great

to rule / to reign over

to sell / to betray / to spare no effort / to show off or flaunt

melon / gourd / squash

self / oneself / from / since / naturally / surely

to boast

to boast / to exaggerate / to praise