Where can I buy a book inlaid with 3K 4K in QQ Three Kingdoms?

Primary Punching "Primary Punching" Place of purchase: Guan Yi, Paomaling and Weizhou Price: 8000 LV7 Three-level inlaid jade, as its name implies, is a kind of stone that can be used to carve the inlaid position for equipment. This is a three-level inlaid stone. Required materials: Obsidian 2+ Crystal 1 (vitality required by Formula 50) "Advanced drilling secret method" Advanced drilling secret method Buying place: Gushan, Northern Wu State Price: 8000 LV9 Four-level inlaid gemstones, as the name implies, are the stones that can be used to carve the inlaid position of equipment, that is, the stones with four-level inlay. Required materials: lapis lazuli 2+ crystal 1 (formula 100 required vitality)