Help me figure out the meaning of the poem below.

Autumn Wind Ci - Li Bai

The autumn wind is clear, the autumn moon is bright,

The fallen leaves gather and disperse, and the jackdaws roost again,

When will we know each other when we miss each other? It is embarrassing at this time and this night.

Enter my lovesickness door and know that my lovesickness is painful.

The long-term lovesickness means long-lasting memories, but the short-term lovesickness means endless love.

I had known that it would be such a stumbling block to people's hearts. How could I have done it? Don't know each other at first.

The autumn wind is so desolate, the autumn moon is so bright; the fallen leaves are fluttering, gathering and falling apart, even the crows perched on the trees are frightened. Thinking about how we reunited with each other so dearly that day, how can we meet again after separation? In this autumn night with the wind and autumn moon, it is so embarrassing to think about it. Walking into the door of lovesickness, I know the pain of lovesickness. Eternal lovesickness is forever remembered, but short-term lovesickness is endless. If I had known that lovesickness would be so entangled in my heart, it would be better not to know each other in the first place.

In the poem, there is a secret sigh that fallen leaves can gather and disperse, jackdaws can fly and perch, and we will see each other again in life.