Du Fu's poem about Bailu is as follows:
1. Reminiscing about my brother-in-law on a moonlit night
The drums cut off the line of people, and there is a sound of wild geese in the autumn. The dew is white tonight, and the moon is bright in my hometown.
My brothers are all scattered, and I have no family to ask about life and death. The letter sent was not delivered, but the troops were not suspended.
2. White dew
White dew is packed with sweet seeds and scatters horse hooves in the early morning. The garden is open and connected with stone trees, and the boat is crossing into the river.
Just by looking at the fish, you will feel happy, and the whip will rush you to roost. Gradually I know that autumn is beautiful, but the paths in the secluded areas may be treacherous.
Extended information
Solar terms story
White dew comes three times and swan geese come one time. There is a touching story about Hongyan.
It is said that the Yellow Emperor had a beautiful maid with skin as white as snow, so she was called a "plain girl". The plain girl was a master at playing the piano. When she plays the piano, the phoenix can't help but fly over and sing along with the sound of the piano; the phoenix can't help but dance; the tree of longevity also blooms one after another.
The Yellow Emperor had a general called Dahong. He was brave and good at fighting. He had a pair of wings on his back and could fly thousands of miles. Dahong loves Sunu deeply. He often spreads his wings and takes Sunu to places with beautiful mountains and rivers to enjoy the beautiful scenery of nature. Sunu always plays the piano and sings for Dahong. Soon, the story of their love reached Huangdi, who granted them a marriage. Dahong and Sonu got married and lived happily together.
Unfortunately, the good times did not last long. A war broke out between Huangdi and Chi You, and Dahong went out with the army. Before leaving, the husband and wife were inseparable. Su Nu said with tears in her eyes: "Husband, Chi You is fierce and powerful. You must be careful. I am looking forward to your return at home." Dahong nodded and hugged her hard. He hugged the plain girl and left the house.
From then on, Sunu missed Dahong every day. She often went to the place where the two of them frequented to play the piano and wait for him. After a long time, the war finally ended. Sunu excitedly waited for her husband's return, but she received the sad news that Dahong had died in the battle. Like five thunders, Su Nu's heart was twisted and she fainted. Huangdi ordered people to carry Su Nu back home.
Dahong’s military exploits were remarkable, and Huangdi ordered people to ceremoniously bury Dahong. From then on, Su Nu played the piano in front of Dahong's grave every day to express her grief for Dahong. The sound of Su Nu's piano moved the world. As she played, Dahong's grave suddenly burst open, and a wild goose flew out from it. Sunu knew that this must be Dahong's transformation. She immediately dropped her qin and turned into a wild goose and flew into the sky.
The Yellow Emperor was moved by their love, so he canonized the wild geese as messengers and asked them to deliver letters to lovers all over the world.