age is that it's relatively easy to manufacture.But this, in Li Chen's view, was still far from enough."The power must be at least twice that of the gunpowder currently in use. After that, materials c...
age is that it's relatively easy to manufacture.But this, in Li Chen's view, was still far from enough."The power must be at least twice that of the gunpowder currently in use. After that, materials c...