After transmigrating to a primitive, untamed world, he got a System to help him. Transmigration plus a System: the standard package, you could say.
But he accidentally slapped the System to death, turning himself into a protagonist with a downgraded setup.
Fortunately, he was left with a Totem Spirit that could control the tribe.
And so Xia Tuo became the tribe's chief. Starting with a minor tribe, he united the clans as Xia, made offerings to Heaven and forged the Nine Cauldrons, steadily developing through farming, from tribe to dynasty and then to an unrivaled empire.