What is before spring?

Genjokoan says > Birth is an expression complete this moment. Death is an expression > complete this moment. They are like winter and spring. You do not call > winter the beginning of spring, nor summer the end of spring. Dogen says here that spring is not after winter, but there is still "before" and "after", which is included in spring, and spring is independent of them. etc. ---------- If not the beginning of spring, what is before spring? Not winter. ---------- And if - likewise - the end of life is discontinuous with the present, does that mean life does not end when I only exist in the present?