What kind of atmosphere did Cha create when he wrote about the scenery in the third sentence of his first letter to his family? Throughout the poem, what kind of characters did the author create?

Adopt the method of integrating feelings into the scenery. The third sentence says that the light in the cool porch reflects the bright moon on the anvil, creating a quiet (or cool) atmosphere. Taking care of the last sentence, writing a letter from home adds endless troubles and expresses the poet's strong homesickness.

Poetry creates an image of a traveler who has been homesick for a long time, but is aroused by receiving a letter from home.