Appreciation: alas! What are you talking about? Heartache! Heartache!

The writing technique of this sentence is repetition. This sentence is a sentence in Lao She's work My Mother, which expresses the heartache and sadness of my mother's departure and a feeling that there is nothing I can do. Lao She's description is exquisite and true, and there are arguments in the narrative. She wrote her mother's hard-working, virtuous, forbearing and strong character simply and vividly in colloquial language. This is a masterpiece.