君子一言,驷马难追

jūn zǐ yī yán , sì mǎ nán zhuī

a nobleman's word is his bond (proverb)

jūn

monarch

son

one

yán

words

,

team of 4 horses

abbr. for Malaysia 馬來西亞|马来西亚[Ma3 lai2 xi1 ya4]

nán

difficult (to...)

zhuī

to chase