I Am the God of Weapon Refining

What should I do if I travel to another world? Here ferocious beasts are rampant and chaos is everywhere. Living in the mountains, ferocious beasts often knock on the door in the middle of the night. Lu Nan, who has a smelting system, said he was not panicking. Just write some random words on two pieces of paper and smelt them. "Ding." "The smelting is successful and you get a copy of the technique." Smelting can make you stronger, and the mountain master Lu Nan was born.