The earth endures, and the sky endures; One day both will end, and this endless sadness will last forever.

So don't say that your sentence is wrong, these two sentences are not upper and lower sentences at all.

The first half of the sentence means that since ancient times, passionate people have finally gained hatred, but good dreams are easy to wake up.

In fact, it is a kind of perception of life, which is relatively negative, but on the one hand, it is true that this phenomenon is also the normal state of life. The so-called "good dreams don't last long."

The second half sentence comes from Bai Juyi's Song of Eternal Sorrow.

Song of Eternal Sorrow tells the story of Tang and Yang Guifei, whose main theme is to praise their love.

In front of this sentence, there is a long eulogy for their love.

For example, "we want two birds to fly in the sky with one wing and grow together on the ground, two branches of a tree." And so on.

These two sentences are the end of the whole poem and should be read together with the previous ones:

……

We hope to fly in heaven, two birds become one and grow on the earth, two branches of a tree. ..

The earth endures, and the sky endures; One day both will end, and this endless sadness will last forever.

Tang He's love is a feeling and a celebration of love.