Question: the text, also known as Classic of Changes, excavated in 1977 from the Shuanggudui archeological site is called what?
Sentence (from "Shuanggudui"): Like Mawangdui and Guodian, two other tombs from the area of the old state of Chu, the Shuanggudui find has shed great light on the culture and practices of the early Han dynasty.
Relevant evidence: No