What does "moon" often represent in ancient poetry?

1, homesickness or lovesickness: in the moon imagery reflects the ancient literati looking for the mother world, looking for the spiritual home, to restore the harmony of the world's psychology, reflected in the classical poetry often shows the theme of homesickness looking at the moon, old dreams revisited the sentiment, the moon is clear in the sky, solid and immovable nostalgia, poets nostalgic for home, the parents of the sentiment, often resting on the transmission of the bright moon. When the lone ministers and prodigal sons traveled to the ends of the earth, always the moon and the hometown together, the moon has become the start of the nostalgia, support for love, return to the home of the mysterious symbols. This does not signify that in the depth of people's consciousness, the moon is always a symbol of the warmth and harmony of the mother society, and thus whenever people travel to the ends of the world when the soul is lonely, the moon becomes the home of the spirit of the trust; the moon is tied to the hearts of the souls of lovesickness, shortening the distance between space and time, which triggers the theme of the Dan Gu and the January longing for the two places and the homesickness.

2. The moon reflects the loneliness of ancient poets and scholars, and the psychology of the disillusioned seeking solace and relief.

3. The eternity of the moon and the cyclic changes of surplus and void make people think of the dialectical development of things between positive and negative aspects in time and the universe. As a symbolic form, the moon evokes people's cosmic consciousness and historical awareness of the vastness and insignificance, evokes the sigh of life with a vast space, and touches the primitive imagery of the culture of the ancient and remote, so the appearance of the moon imagery is always accompanied by the vast and desolate cosmic space, the vastness of the tragic consciousness of heavenly questioning phase of the aesthetic realm of the majestic and ancient.