How to understand the "fruitful" in the poetry calendar?

"A calendar is like a pine tree. A page of a calendar is a petal. When the petals fall, they will bear rich fruits. " Poetry uses metaphor to describe the tearing of the calendar day after day, just like the falling of petals. From the plant's point of view, flowering and fruiting are natural. Then life is the same, as long as you live seriously and work hard, you will always get something. Falling petals can be compared with the labor you have paid, that is, in the past days, the fruit is the reward of harvest. Poetry reveals the truth that efforts will eventually be rewarded through metaphor, and it is full of optimistic spirit.