I Was Reincarnated into the Magical World and Became an Arms Dealer?

When he opened his eyes, Luo Yucheng found that he had been reincarnated into a different world where magic was respected, and he had inherited a small alchemy workshop that was on the verge of bankruptcy? I wanted to rely on the knowledge of my past life to make ends meet, but I witnessed the "primitive" fighting methods of magicians: expensive staffs, lengthy chants, inefficient use of magic... It was a waste of resources! So, while others were still studying the fireball technique, the roar of machine tools sounded in Luo Yucheng's workshop: From the adventurer team to the kingdom's army, orders are coming in like a snowflake. Luo Yucheng, a former engineer, suddenly became the most popular and feared arms tycoon in another world! "Magic? I'm sorry, my lord, times have changed.