Proverbs and Folk Poetry (Tục-ngữ Phong-dao) by Nguyễn Văn Ngọc (pen name Ôn Như) is a large-scale collection and preservation project of Vietnamese folk literature, published in 1928. It compiles approximately 6,500 proverbs and over 850 folk poems recorded from oral traditions as well as from ancient books, accompanied by systematic classification and arrangement. The work is divided into two volumes: the Upper Volume contains sayings ranging from three to twenty-three words in the forms of regional expressions (phương ngôn) and proverbs (tục ngữ); the Lower Volume – Part 1 contains stanzas of four lines or more in the form of folk songs (phong dao or ca dao); and the Lower Volume – Part 2 is an appendix of riddles (câu đố). In the introduction, the author states his principle of prioritizing the collection of as many entries as possible over refined selection from the outset, without drawing overly strict distinctions between idioms, proverbs, aphorisms, prophecies, riddles, regional expressions, children’s rhymes or folk songs.