Travel back to Panjiayuan in the late 1980s and climb out of a box of scraps of paper. As soon as my brain received the memory of the original owner, a bald man wearing glasses came over and picked up the half-torn book at my feet: "Little brother, can this shabby book be sold?" I looked down and saw half of the seal on the cover of the book - it was the treasure of Emperor Qianlong's imperial review.