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It is recorded in the "Ode to Withered Trees" that when Huan Wen was old, he saw the willow trees planted in the past year and sighed: ‘The willow trees planted in the past. Once the branches fluttered and cherished each other. Now, I see its branches and leaves shake and wither, a sad scene beside the river. So it is with trees, how much more with men?’ Willow trees have grown from lush branches and leaves to wither and wither now, which makes people have to sigh that time is fleeting and life is impermanent. However, although the signs of aging will become more and more sad due to the passing of time, when life is in full bloom, the vibrant joy gives people hope. The birth of the giant panda Fu Duoduo has brought endless hope and happiness to this summer.