Excuse me, what is the implied meaning of the sentence "Love carved on the back of a chair will open a windless and lonely forest like flowers on cement"?

Read a novel by Jing M.Guo.

"How many flowers do you know in your dream?"

When the hero and heroine were together, they carved the vows of love behind a chair on the street.

Then they separated.

The hero ran to the back of the chair and engraved "Wife, I will wait for you."

One day, the heroine saw it.

I was deeply moved.

But it ended in tragedy.

You can have a look.