Here's how:
* The poem gives human qualities to the rain. It describes the rain as "laughing" and "crying" and having "no difference" between the two actions.
* This personification highlights the poem's message about the interconnectedness of joy and sorrow. The rain is a natural force that embodies both, just as we do in our own lives.
While the poem doesn't use other common figures of speech like metaphors or similes, the personification is central to its meaning and impact.