After playing for a few days, I went back to see that Ba Tou was still studying the sheepskin map, so I asked: "Ba Tou, you've written so much on your paper, what have you figured out",I shook my head and piled up ten or so sheets of white paper. "Too difficult," I said. "The day before yesterday, I went to the Yin Chuan Museum and copied a character from a sheepskin scroll. I asked a deputy researcher for help, but... he didn't recognize it either.",The topic turned to the person who created the Xi Xia script.。