I Am a Professor in the Demon Sect

As the discoverer of Yuanzi, the father of electromagnetic theory, the inventor of large-scale elixir production lines, the designer of automatic magic weapon production robots, and the manufacturer of aviation battleships---Zhang Bei just wanted to engage in research in peace and quiet, but found that he had become the number one expert, waving his hands to an army of millions of robots and space-based cannons. This book is also called: Unknowingly, I became the overlord of the fairy world, and the matrix turned out to be myself?