Travel into the World of Infuriating Punk

Chen Si traveled through time and became a priest of light, but he couldn't learn any attack skills. Everyone laughed that he was destined to be a "nanny" in this life. Fortunately, the knowledge he had before time travel is still there. So he created the "Zhenqi" internal combustion engine as a skill replacement. "Just wait, wait until I build a big mecha, and I will crush you in minutes!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.