That book, he had read several times, but was not very interested in it. He didn't care much for the "receiving an official mandate and becoming immortal" that his master had always been preoccupied with.,After swallowing half a bowl of congee and rice soup, Li Yuan's mind was still preoccupied.,And what that book called 'Heavenly Mandate', is indeed simple, even to the point of being rudimentary...。