Have you ever felt helpless? I woke up suddenly in the middle of the night, couldn't see my fingers, couldn't grasp the feeling of support, and felt like I was abandoned by the whole world. Have you ever felt this sad? There is a dull pain in the left atrium, which is so painful that I want to tear the clothes on my chest. My heart aches so deeply that I cannot shed tears. There is only the deep sadness and sadness surrounding me, which I cannot express with tears. If not, please read this article.