The sound of the wind is so strong, and the pine branches are so strong. According to the Chinese Poetry Network, the poem "Strong" in the Three Kingdoms is Liu Zhen's "Gift to Congdi", and the complete poem is "Pine on Tingting Mountain, Stroke in Sese Valley". How loud is the sound of the wind, how strong are the branches of the pine trees. It means: The tall and tall pine trees on the high mountains are against the howling wind in the valley. The wind was so strong and the pine branches were so strong.