Of all the Buddhist works written by China people, only what is regarded as a classic? What is the full name of this book?

The Six Ancestors Tanjing, also known as Tanjing and Six Ancestors Magic Weapon Tanjing, is the full name of the Mahayana Prajna Paramita Sutra in the South Zongdun Gate, in which the Six Ancestors Huineng practiced magic in the Dafan Temple in Shaozhou. The classics collected by disciple Fahai were handed down by Huineng, the sixth ancestor of Zen Buddhism. "Six Ancestors Tanjing" records Huineng's deeds of spreading Taoism and enlightening his disciples through words and deeds. Rich in content and popular in writings, it is an important basis for studying the origin of Zen thought. The Tanjing can be divided into three parts. The first part is the demonstration of Maha Prajna Paramita in Brahma Temple. In the second part, after returning to Caoxi Mountain, he taught "No Phase Ring", so Fahai added "Giving without Phase Ring" to the title of the book. The third part is the question and answer between the six ancestors and their disciples. The Six Ancestors Tanjing is the only Buddhist work in China that is honored as "Jing". At present, there are three different versions of Tanjing, namely, Tibetan version in Ming and Qing Dynasties, Fangshan Shijing version and Monk Zongbao in Yuan Dynasty. After revision in the 28th year of Zhiyuan (129 1), Tanjing of Zongbao became the later Tibetan version of Mingbao, which was circulated for more than 700 years, so it was also called the circulating version.