1, alone in a tall building, looking at the end of the world. -Du Fu's Ascending the Mountain in the Tang Dynasty.

Since ancient times, no one has died in life, leaving a glowing heart. -Wen Tianxiang, a writer in the Ming Dynasty, Crossing the Ocean.

However, as long as China keeps our friendship, heaven will remain our neighbor. -"Farewell to Shu as viceroy" in the Tang Dynasty. Aoyun is a kind of rhyme in classical poetry, which refers to the rhyme ending in Aoyin. In ancient poetry, Aoyun is often used to describe the feelings of missing and express the feelings of missing distant relatives, friends or hometown.