Legendary Grunt from the Start of the Apocalypse

As the zombie virus breaks out, the Heavenly Dao selects Gao Yang and grants him a base. He will use it to build an empire, save the world, and preserve a spark for the legacy of Huaxia. Apocalypse + army-building + farming + technological development + a journey from ordinary soldier to legendary emperor, fighting his way forward. There is a System, but it is not all-powerful. He will have teammates to help him, so he won't be alone. There is also a female lead, but no harem.