Doomsday Disaster, I Have a Synthesizer of All Things

Your roommate has mutated, what will you do? Lu Chen encountered this problem on his first day of time travel, and ran into the kitchen in desperation. Bite! The synthesizer of all things is ready, please choose the host. [Rice cooker + frying pan + kitchen knife, can be synthesized into carbon steel machete*1] [Gas tank + rice cooker + gas stove, can be combined into a flamethrower*1] He chose the carbon steel machete without hesitation and gave his roommate a ride! ………… It wasn't until one day that he came to a pharmaceutical factory that things took a turn for the better. Bite! The synthesizer of all things is ready, please choose the host. [Zombie brain crystals + antibiotics + mercury, can synthesize enhancer*1] [Gold + Potassium Nitrate + Storage Battery, can be synthesized into a pistol*1] …