In Qigong's Qigong Collection, Sister Yang, an inscription about the Southern Song Dynasty, thinks that Yang Wa is the fault of Yang's surname, and Yang's surname is Yang Hou. Mr. Wang believes that it is wrong for scholars in Ming and Qing Dynasties to regard Queen Yang and Yang Guifei as two people. There are three reasons: First, Beware of unofficial history and Ye Shaoweng's Notes on the Four Dynasties prove that Queen Yang is an orphan and has no brothers and sisters, and her brother Yang Cishan was later identified and has no blood relationship; Second, the existing inscriptions and fonts of Yang Shu's paintings are the same, but there are some changes in the early and late stages, and there is no trace of creation. In addition, the seals of "Momo of Kunning Palace", "Kungua" and "Kunning Hall" can be used by everyone except the Queen; Third, in Volume IV of Wu Shidao's Collection of Departments in the Yuan Dynasty, it was recorded that "Gong Shan continued to compose a poem by Yang, calling himself Sister Yang".
It is said that his calligraphy is similar to Ningzong's. In the Qing Dynasty, Jiang Shao's Notes on Yunshizhai commented on his calligraphy as "elegant and agile, reflecting Hunan and falling". There are six poems and one word today. The poetic style is beautiful and elegant.