The moonlight is bright, like shining white silk, filled with tranquility and serenity. Where does this sentence come from?

From "Beautiful as Ever"

①The moonlight is bright and clear, like shining white silk, filled with tranquility and serenity. I held my mother's hand and stood at the street corner, waiting for my younger brother to come home from late school. It was not cold, but the street was quiet and empty. I waited impatiently, but my mother waited patiently and patiently. Looking at the wide and white road in the distance, my mother said: "I have been waiting like this, I am used to it." My heart trembled, and my eyes blurred in my mother's thin figure.

② I have also made my mother wait like this. It is not that when my daughter was young, it made my mother more worried when my daughter got older. On those moonlit and starry nights, I sang and sang with my classmates all the way home. I turned into a quiet street alone, but I saw my mother's clothes fluttering with the shadows of the trees. I felt so confused that my heart suddenly beat fast. , ran over, but only called "Mom!" My mother didn't say anything, smiled happily, patted my hand, and walked home together.

③ Now I have gone to a different place and only come back during the holidays, but my mother’s figure is still standing under the tree at the street corner on time, waiting for my younger brother who will leave home to study soon. I suddenly envied my mother for being able to contain such deep love in quiet waiting.

④The crisp bell rang, and my brother stood in front of my mother and me with a smile: "Mom! Sister!" "Why did you come back and made mom wait for so long?" I was half happy and half complaining. "Go home!" Mother still smiled happily and patted her brother's hand. My brother made a face at me. Seeing my brother's tall figure next to my mother, I suddenly felt that I had lost something. A sailing ship can miss the warm harbor, but it cannot stay anchored forever.

⑤ Before returning to school, my mother quietly packed my bags. Seeing me walking around with her but not speaking, my mother said, "Your grandmother sent me off like this in the past." Ah, I Looking at my mother silently, I seemed to see my grandma's hands busy. I suddenly understood that my grandmother must have stood at the street corner in the past, waiting for my mother to come home, just like my mother is waiting for us to come home today, and there will be a day when I can let my deep love melt in the waiting.

⑥As my mother’s figure standing still in the moonlight swayed before my eyes, I realized that no matter what happened, those nights in my memory would always be as beautiful as before.