180,000 experience—45,000 from the Black Spider mission, and the rest mostly accumulated from Han Xiao's efforts in tirelessly crafting Retractable Knives and Highly Explosive Gunpowder. Currently, both blueprints were at Lv. 2 and Lv. 3 respectively. As they were cheap and easy to craft, they were much easier to level up in contrast to other blueprints like the Lightweight Mecha Arm, or the Rover.