We played sandboarding at Tengger Desert, I don't know if it's still there. Sandboarding is when two or three people sit on a wooden board and slide down the sand dunes. It's very exciting.,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","That's right," he sighed, "The researcher surnamed Ma shook his head after seeing my copied characters. He said it was a special kind of Xi Xia script, similar to palace writing, used only within the small circle of Partyuan noble clans. It's very difficult to translate now."。