"Youth is a hasty book" is in which poem of Xi Murong? What is the whole poem?

It's from Xi Murong's Youth is a Too hasty Book:

I forgot how it started

In that ancient summer that I never came back

No matter how I pursued

You were young, but your smiling face was very shallow

and gradually disappeared into the haze after sunset

. After reading and rereading

, I have to admit that

Youth is a book that is too hasty

[ Creation background ]

The author mainly wants to express the regrets and beauty of youth. It is a life sigh that has nothing to do with depression. At the beginning of the poem, only one sentence, "All endings have been written, and all tears have set out", conveys the author's infinite sadness about the passing of youth and infinite bitterness about the short life, as if a summer cloud covered the sky and gripped the reader's heart tightly; Just like the tears of departure, they wet every sensitive and fragile life.

Next, the author began to pursue the distant youth, and this pursuit not only did not comfort the tired heart, but led the author into a deeper sigh. According to common sense, there seems to be some connection between lament and depression; However, in the tearful sigh of Youth, we feel the persistent and determined figure of the pursuer, which has nothing to do with depression. This sigh is the spark of the collision between gorgeous dreams and ruthless reality, and the strong contrast between fiery youth and plain life. This sigh comes from the helpless sigh of the eternal struggle against short life and real life.