Why do the poets in Rain Lane say that they are girls like cloves instead of roses, peonies or lilies?

A girl with a lilac knot, that is, a lilac bud, symbolizes people's worries. Peony is the representative of wealth, and rose is the symbol of love. Lily symbolizes peace and lotus symbolizes purity. From this point of view, it seems that many flowers in the world have their representative and symbolic significance. Among the hundreds of flowers, there is a kind of flower called lilac, which blooms in mid-spring, showing Baise or purple, with knots. Colors are not frivolous, but so beautiful and noble that they often win the favor of poets who lead an honest and clean life. Lilacs are beautiful, but they fade easily. So sentimental poets often use lilacs to hurt spring, saying that they are sad things. It can be seen that clove is a trinity symbol of beauty, purity and sadness. What a beautiful poem, what a beautiful girl, what a beautiful picture: I am holding an oil-paper umbrella and wandering alone in a lonely and long rain lane, waiting for a girl like lilac. Sure enough, the girl came, but she drifted past me like a dream, walked towards the decaying fence and disappeared at the end of the rain lane, leaving me with infinite melancholy. The girl is like a goddess in her heart. I accidentally passed her by, but I didn't hold hands with her all my life. Is it emotional failure that leads to depression?