I've Already Built a DF61, but You Still Control the Beast?

Time travel + beast control + cool writing + military industry crushing + krypton life 588 Bao Zhong? 888 Night included? Why are Internet cafes so expensive? Traveling to a beast-controlling world where monsters eat people, Chen Shou showed zero talent. Just when he was about to lie down, he was jumped by a fox demon! Bite! Bind to the Iron Heart system, beast control = arms research and development center! Inject 5 years of life into your assault rifle! Before the fox demon finished casting his flirtatious glances, he was beaten into pieces by "ta-da-da"; The wolf demon kicked down the door and shouted to kill, and as soon as it showed its fangs, it ate a full magazine of bullets! All the members of the Monster Control Bureau were confused: "You call this beast control?" Chen Shou spread his hands: "What else? Sir, times have changed!" Lifespan is exchanged for firepower, equivalent is justice! Demon? Da da da da da! Beast tide? The torrent of steel, crush it!