In Vietnamese, Chinese characters are called chữ Hán (字漢 'words from Han dynasty'), Hán tự (漢字 'Han characters/words'), Hán văn (漢文 'Han script'), or chữ nho (字儒 'words of Confucians') [REF].
The Vietnamese word chữ (character, script, writing, letter) is derived from the Old Chinese word 字, meaning 'character' [REF].