The most common are little rhymes that give clues to the structure of the Chinese character to be guessed. A simple example: Four tall mountains Top to top; One river down, One across. The answer is field.
其中，謎面「四山縱橫，兩日綢繆；富是他起腳，累是他起頭」，以及另一個謎題「四山相對頂相連，橫也川、豎也川，團圓一家共十口，只有四口不周全」，同射「田」字，均富巧思。