When I've finished the Thieves' Guild quests and trying to level up at the chests, I've found some xp difference: Opening in the left-hand side(North/ blue handkerchief side) Door Opening in the left-hand side(North/ blue handkerchief side) Chest Opening in the right-hand side(South/ red handkerchief side) Door Opening in the right-hand side(South/ red handkerchief side) Chest If you can't see, here is a table for summary: Opening blue side door-210xp Opening red side door-280xp Opening blue side chest-120xp Opening blue side chest-120xp PS: the door will last for few minutes This is the first time that I post in forun, so please tell me some skills for writing tips =)