Encounter in Time and Space

High school student Ye Ming had a strange dream on the morning of school. He was very doubtful about the content of the dream. On the way to school, because he was very doubtful about the dream, he thought about it in the park, but he had no clue, so he quickly gave up. When he was about to leave the park, he found a strange stone. The moment he picked up the stone, the stone produced a strange light. Ye Ming was sucked in by the light, and then disappeared in the park...