How to write the preface to Reading White Birches?

Read Birch's opening remarks as follows:

You escaped from all the hustle and bustle of the world, leaving only an innocent and delicate white: like a quiet fairy tale world, the village is still quiet, snowflakes are still falling, birch trees are still flowing in the dense withering, pigeons are still flapping their wings in the sky, and eternal vows are still swaying on the earth. He and her vows belong to them and are sung as the eternal mission of Birch.

However, being immersed in love is always blocked by war, and the raging war has burned to my hometown. He resolutely picked up his gun and went to the battlefield. She had to wait silently, waiting for the hero to return. As a result, the beautiful scenery once turned into memories, the warm hut once turned into a deserted place, and the oath once turned into waiting for autumn water. ...

The shadows under the birch tree are no longer in pairs, and the firm belief is firmly waiting for the triumph of the hero in her heart. She believes that memories are short-lived, and waiting is even more short-lived, because all lonely memories, all sadness and all silent waiting are just for the grand triumph, for the hero in her heart, and for the eternal streamer oath on the birch tree.

Waiting for heartbroken is the bad news of dying in battle. When all fleeting things become eternal, colorful vows become pale. Does the agreement of birch forest still count? I think so, not bad! You said, man, you don't lie. Well, you must keep your word. Then why don't you come back? Probably lost in the distance! Don't be afraid, I will always be here waiting for you. If you see the light, come here and I'll wait for you there. As a result, the splendid youth station became an eager wait.

When the snow falls, the villa is wrapped in white. Who knows how many heroes' bodies are buried in the swirling flames of war and how many hairs are waiting to turn white? Pigeons are still flying in the sky, the haze is still dyeing, the snow is still falling, the village is still at peace, and the people who used to be deep in the birch forest have disappeared forever. She said that he just lost his way in the distance, and he would definitely return to this birch forest, so I kept standing under the birch tree waiting for him to come back and complete my unfinished oath.

Pigeons flying overhead have clouded the sky countless times, and I don't know how many years have passed. In a word, I remember that the heavy snow flooded the village several times, and the spring breeze dissolved them countless times, and then melted into a lush green. Her hair has turned white, and her youth is fading away. She often hears his voice and asks her to go to the birch forest. When she died, she muttered to herself, here I am, waiting for me in the birch forest.

Many years later, people don't remember how many people died in that battle, nor do they remember having such love. When they see the name on the birch tree, they will guess which couple finally got married here. As a result, no one would have thought that love and life without tombstones were carved here, and the birds crashed from the side and fell into a haze. ...