王婆卖瓜，自卖自夸
wáng​pó​mài​guā​zì​mài​zì​kuā

to praise one's own goods

  1. 王 wáng
    Wang
    (surname) Wang
  2. 婆 pó noun
    old woman
    (bound form) old woman; elderly lady
  3. 卖 賣 mài verb
    to sell
    To exchange goods for money; to be for sale; opposite of 买 mǎi
  4. 瓜 guā noun
    melon
    melon; gourd; squash
  5. ， zì
    non-Chinese
  6. 自卖自夸 自賣自誇 zì​mài​zì​kuā
    to blow one's own trumpet
    to praise the goods one is selling; to brag or boast about one's own achievements or qualities