(1) in the article, it is also dependent on Liu and Liu. In the second paragraph of the text, "whenever I see the willow leaves that are rolled up and slowly stretched in the warm sunshine, I can't help but reach out and pick one, chew it in my mouth and slowly taste the bitter taste." One sentence leaves readers with a deep suspense: why do you want to taste something bitter? The conclusion said: "I can't help but pick a piece and chew it." And I want to tell people that it tastes bitter and slightly astringent, but it can save people. " The suspense at the beginning was solved, and the memory of "Liu Yeer" as a life-saving food was expressed. (2) Bitterness and pleasure go hand in hand, and willow and stay together, which is exactly what the author of this article conveyed to us by "Liu Yeer".