The trees are thin and the grass is covered with cold autumn winds.
The flying geese are covered with frost and the sky is full of frost.
Explanation:
Nowadays, the character Liu is usually only used as a surname, but now it has to be combined into a sentence with the ancient meaning. (Liu: verb, withered. "Chinese Dictionary" says: "Liu, the branches and leaves of trees are sparse and uneven.")
The first sentence: The cold autumn wind blows through withered trees and withered trees. grass.
Second sentence: The wild geese flew in a straight line in the sky against the frost.