We Agreed to Repair Toys, and You Combine Them with Black Technology?

Lin Feng's repair shop was on the verge of bankruptcy, but he unexpectedly obtained a heaven-defying synthetic system. I wanted to make a fortune in a low-key manner, but unexpectedly, I repaired a toy and synthesized a cross-generational technology. His mother-in-law, Gao Huizhi, urged him to find a serious job every day until he discovered that his daughters were driving anti-gravity supercars. When agents from various countries were lurking around the shop, Lin Feng looked at the synthesized causal weapon and fell into deep thought: "I just want to practice something quietly, but you have to force me to be the boss behind the scenes?"