Four lines of rhyme can be left unmarked.

The Seven Wonders are the treasures of China for thousands of years, and they have strict rules and regulations. Among the 300 Tang poems, a large part is the Seven Wonders. He is short, capable, endurable and full of connotation. The ancients wrote seven miracles after "Ping Yun Shui", which is also the gold standard for evaluating price poems now. However, due to the popularity of Putonghua, modern people sometimes use "Chinese new rhyme" to write four wonders. This is also the only rhyme book recognized by various authorities. Modern poetry generally uses rhyme. In a slightly formal place, it is impossible to write seven poems with rhyme.