The cadence of four word and seven-word sentences can supplement each other, which not only reinforces richness and easiness of the cadence but ale makes the rhythm mere concordant and harmonious.

• 四言句和六言句的节奏偶奇相间，单复往返，不仅增强节奏的丰富性和舒缓性，而且吟诵起来朗朗上口，铿锵有力，音节谐熟，在阅读上也可起到调剂作用。