There are twelve months, twenty-four fortnightly periods and seventy-two subperiods in a year which, when added together, equal 108, suggesting that we must be alert at all times.
一年有十二個月，有二十四個節氣，有七十二候，加起來正合一百零八，就是要人歲歲年年日日時時都要警醒如鐘。