 Previously unknown Confucius dialogues and quotations have also been unearthed. The Dingzhou site also yielded texts given the titles “Sayings of the Ru” (Rujiazhe yan 儒家者言) and “Duke Ai asked about the five kinds of righteousness” (Aigong wen wuyi 哀公問五義). A significantly different text also given the name “Sayings of the Ru” was found in 1977 in a Han tomb at Fuyang in Anhui Province. Several texts dating to 168 BCE recording statements by Confucius about the Classic of Changes (Yijing 易經) were excavated from the Mawangdui site in Hunan Province in 1973. Additionally, a number of Warring States period dialogical texts centered on particular disciples, and a text with interpretative comments by Confucius on the Classic of Poetry given the name “Confucius discusses the Odes” (Kongzi shilun 孔子詩論), were looted from tombs in the 1990s, sold on the black market,  and made their way to the Shanghai Museum. Finally, the 59 BCE tomb of the Marquis of Haihun also contains a number of previously unknown Confucius dialogues and quotations on ritual and filial piety, along with materials that overlap with sections of transmitted texts including the Analects, Records of Ritual and the Elder Dai’s Records of Ritual.