With a glance at the chaotic dormitory behind him, Li Yuan pushed open the door and didn't wait for the last person to leave the room.,An apprentice, naturally holds the lowest status. Their pay is meager, and besides that, they are often beaten and scolded. To enjoy better treatment, one must at least become a helper, or even a master craftsman.,And what that book called 'Heavenly Mandate', is indeed simple, even to the point of being rudimentary...。