Explanation "Zheng Qian's Three Wonders" praises people who are good at poetry, calligraphy, painting, or generally speaking, they have talents in calligraphy and painting.
Source: This scripture comes from "New Tang Book·Zheng Xu Zhuan": "He was good at painting landscapes and good books, but he often had no paper, so Ci'en Temple stored persimmon leaves for several rooms, and went to collect leaves and four books. After a long time, he tried to write his own poem and paint it as a tribute, and the emperor signed it at the end: "Zheng Qian's Three Wonders"
Zheng Qian was born in Xingyang, Zhengzhou (now Xingyang County, Henan). . In the early years of Tianbao (AD 742-756), Emperor Xuanzong of the Tang Dynasty served as Xielu Lang and was in charge of music. He used the cases at that time to write more than 80 articles. Someone discovered his manuscript and wrote to the emperor to report Zheng Qian's private behavior. When writing the history of the country, Zheng Qian hurriedly burned the manuscript and was demoted for ten years. After returning to the capital, Tang Xuanzong cherished his talent and placed him in the Guangwen Hall as a doctor.
Zheng Qian likes to paint landscapes and calligraphy. Since there was no paper, he stored several rooms of persimmon leaves in Ci'en Temple. He used the persimmon leaves as paper every day to practice calligraphy. As time went by, the persimmon leaves were almost used. After that, Zheng Qian once presented his poems and paintings to Emperor Xuanzong of the Tang Dynasty. Tang Xuanzong wrote four words at the end of the poems and paintings: "Zheng Qian's Three Wonders".