Couplets written by Shen Fu, a writer in Qing Dynasty.
Later, it was misinformed as the front of the cliff, because the cliff is easier to understand and has a strong sense of the picture, which is better in the momentum of the couplet.
I don't think Mr. Zhang Daqian will modify the original, so it may not be the original.
But I don't know calligraphy, just guessing.