On the evaluation of couplets

Caotang is reserved for future generations, and poets write about the future. Concise and extensive duality.

The waves are rolling outside the railing. I am an eternal hero, but I can't hold the river that is gone forever; The sun and the moon opened between the windows, and the Yellow River came west at four o'clock. Evaluation: "outside the railing" and "between windows" can be removed; "Ren" is homophonic and taboo in couplets.

Weng has been gone for eight hundred years, and his hometown is still drunk; Six or seven miles in the mountains, the pavilion is not alone. It's wonderful to be lenient with others, cherish others before, and make things for me.

Mr. Xue Qian planted willows; Chu Shi's grave is still on the ridge. He sometimes plants willows around his seclusion; Chu Shi's grave always stays on the ridge, which is more effective.