Armor Hero: Dropped into the Qin Dynasty, I Burn Books and Slay Mutant Beasts

Thanks for the invitation. I'm in Great Qin practicing sorcery, but I've run into magical beasts. When Wang Ji woke up, he had transmigrated to Great Qin two thousand years in the past and become the grandson of the famous general Wang Jian. At the age of three, he met a wandering Taoist who took him on as a disciple. After learning the art of sorcery from him, Wang Ji returned home and was summoned to the palace by the First Emperor to take up a post. As luck would have it, he awakened a sign-in System. Daily sign-ins rewarded him with all kinds of rare treasures! He thought he could change the course of history and achieve one of a transmigrator's ultimate goals, but then... Why am I the one in charge of the “Burning of Books and Burying of Scholars”? Burning books is fine. I'll just secretly make copies. But what in the world are “magical beasts”? So the books being burned aren't the sorcerers' books at all. They're those darn aliens! Wait, what did you say? My grandfather, Wang Jian, is an inheritor of the Five Elements? My master is Yuanshi Tianzun? The First Emperor is a half-Emperor Armor wielder? The First Emperor is dying, and the magical beasts and Dark Protectors are about to plunge the realm into chaos? And I'm a reserve candidate who's supposed to turn the tide at the last moment? Well, what are we waiting for? Armor, combine!