by — Chapter 56 The air in the Library's Ancient Book Restoration Department is always heavier and quieter than elsewhere.Time seems to be frozen here by the sticky smell of old paper and fine dust, flowing extremely slowly.The thin sunlight in the afternoon shines through the high windows, cut into regular gratings by the window lattice, and casts diagonally on the long dark brown oak table, illuminating the slowly flying dust in the air as fine as gold powder. Ye Qiulan was sitting in his usual seat, with…