What do you mean by "autumn is strong from people's hearts"?

The original source is Wu Wenying's Farewell to Tang Duoling.

Original text:

Where to synthesize sadness. Leave people's hearts to autumn. Even if it doesn't rain, it will be windy. It's cool at night, the weather is fine, there is a bright moon, and I'm afraid to go upstairs.

Dream of rest in old age. Flowers, smoke, water. Yan resigned, but the guests were still staying. The weeping willows don't touch the skirts. The dragon is a boat.

Translation:

How to synthesize a "worry" is to add autumn to the hearts of parting people. Even if the autumn rain stops, the wind blows the leaves of banana and blows out cold air. Others say the weather is best when it's cool at night, but I'm afraid of climbing tall buildings. The clear scenery in the bright moonlight made me even sadder.

The past is like a dream, flowers bloom and fall, and smoke billows eastward. Swarms of swallows have flown back to their hometown in the south, and only my wanderer is still staying in a different place. Weeping willows can't tie her nepotism, but they firmly tie my boat.