Troubled Times: I Bought the Whole World with One or Two Silver

This is a bloody and chaotic world where human life is worthless, and it is also a desperate era where productivity is locked. My name is Li Cun Yi, a poor guy who starved to death. But when I open my eyes again, the whole world will tremble for me. [Ding! Your "one tael of silver" has arrived. Please confirm your purchase: AK-47, with a free base ammunition.] From then on, history was kicked into the ICU. When the cavalry of the grasslands crashes into my steel ball mine array; when the indestructible city wall encounters my C4 directional blasting; when the so-called commander of the army is shot in the head by me from ten miles away... I, Li Cunyi, will use the inexhaustible future munitions and the ancient silver that is rich enough to rival a nation to tell this era— I rewrite the rules! The world belongs to me!