This sentence comes from a prairie ballad.
The original text is; The sky is blue, the clouds are floating, the grass is green, bees fly to Doby to kiss you, and butterflies fly to kiss you. Prairie, prairie, galloping horses are really chic, eagles soar in the blue sky, and the grassland beyond the Great Wall is picturesque. Cattle sing, sheep sing, the shepherd returns with a whip, the moon is curved and the night is beautiful, the yurt is warm and ecstatic.