I'm About to Take Off in Modern Times. What Other World Should I Wear?

During the exam, Xu Zhu obtained the modern knowledge omniscience system. From then on, if God helps him in the exam, the system can answer all questions. He thought his life was about to take off, but he accidentally died and traveled to a different world where humans can use the power of elements. Xu Zhu: "System, what is the power of elements?" System: "Host, I am a modern knowledge omniscience system. I don't know anything about the other world." Xu Zhu: "..." The question is, how should the protagonist use the system to play in a different world?