Autumn is coming. Do you know the Chinese saying “一日不见，如隔三秋”? But what is “三秋”? Does it mean “three autumns”? This saying comes from a poem in The Book of Poetry (《诗经》). “秋” means three seasons. One season is three months, so three seasons is nine months. That’s to say, “三秋” also means nine months. These days, we use this to describe a long period of time.