Later, the peach wood was replaced by red paper, which symbolizes good luck and happiness.

后来，桃木被红纸代替， 象征着吉祥幸福。

It was believed that hanging a piece of peach wood with an inscription of the two guards' names on doors could scare evil things away.

人们相信，在门上挂一块刻有两名警卫名字的桃木可以吓跑邪恶的东西。

By the Song Dynasty (960-1279), people began to write two auspicious antithetical lines on the peach wood instead of the names of the two guards.

到了宋代（960-1279）， 人们开始在桃木上写上两条吉祥对句， 而不是写上这两个卫士的名字。

It is recorded that the origin of spring couplets can be dated back to 1,000 years ago when people hung taofu (written charms on peach wood) on doors.

据记载，春联的起源可以追溯到1000年前，当时人们在门上挂桃符。