Cao Cao's "Walking Out of the Summer Gate" is a prelude, so why should it be named Yan?

step out of the summer gate and walk brightly

step in the clouds and rain, surpassing the heights of Jiujiang.

I don't know what to do when I look at the similarities and differences, but I'm pregnant.

after passing through my Jieshi, I feel sad about my East China Sea.

stepping out in front of the text of Xia Menxing's poem, there is a "colourful" word, which is equivalent to the preface or preface of the poem. This kind of writing has always influenced Yuan Zaju. Some Yuan zaju have a short play called Yan Duan before the drama, which is equivalent to the prologue.