Breakdown of haru ni naru to, kawa no chikaku no sakura ga kirei ni sakimasu.
Questions & Answers about haru ni naru to, kawa no chikaku no sakura ga kirei ni sakimasu.
に marks a point in time here, so 春に means in spring.
In this sentence, though, it is part of 春になると, not just 春に by itself. So the idea is not simply in spring, but more specifically:
- 春になる = to become spring
- 春になると = when it becomes spring / when spring comes
So に is attached to 春 because なる often uses X に なる to mean become X.
