I don't remember who said it, but there is indeed such a sentence: "Everything will pass, like those flowers and those flowing water." When my dear Chao read this sentence to me, I was still a child and could not understand the meaning behind the passing of falling flowers and flowing water. What kind of sadness is lurking, and I can't understand the deep sorrow hidden in Chao's heart when he said this sentence, but I did believe in this sentence, and I also stubbornly believed that the suffering I was experiencing at the moment would have an end. But it wasn't until much later, when Jiu Daochao left, Obito left, and many, many people who had been with me all left one by one, that I suddenly realized that some pain was destined to be with me for a lifetime. Human beings are wonderful animals, and different emotions are transmitted and maintained between people, endlessly. Therefore, wherever there are people, there will be pain. Tiny, huge, endless.