Author of The Last Eunuch Sun Chuan (published in English and Japanese, 15 foreign language translation); Documentary of the last emperor's heir (rated as the best seller of the second Beijing Book Festival); Biography of the Last Emperor's Brother Pu Jie (rated as one of the top ten best sellers in the United States) and Decryption of the Last Marriage of the Last Emperor have been published in overseas traditional Chinese versions, which have been evaluated by hundreds of media at home and abroad. Among them, the Japanese version of The Last Eunuch Sun Chuan was reprinted seven times in a few months. There are also books such as The Birth of the National Flag, National Anthem, National Emblem, Capital and Chronology of New China (as a teaching aid for the political teaching materials of the State Education Commission). The Last Royal Family Series-The Extraordinary Life of the Last Emperor published by People's Literature Publishing House tells you about an unknown Puyi, the last royal sister, the last uncle Zai Tao and the last uncle Runqi. In addition, he also wrote a lot of reportage, prose, travel notes, poems and other works.

Over the years, Jia has interviewed hundreds of people and collected tens of millions of words of historical materials of the last emperor, the last eunuch and court figures in the late Qing Dynasty, some of which are rare at home and abroad. Some precious photos he collected in the late Qing Dynasty are unique. At his own expense, he recorded hundreds of hours of recordings of figures since the late Qing Dynasty, and filmed a large number of documentaries of historical figures since the late Qing Dynasty, such as The Last Eunuch Visited the Forbidden City, The Last Eunuch Memorized His Life, The Last Record of Royal Life and so on. It has aroused widespread concern at home and abroad.

He is the narrator of the large-scale documentary The Forbidden City. He wrote an epitaph for the last emperor Puyi and an inscription for the last eunuch Sun.