How Can I Travel Through Time Just by Sending a Piece of Paper?

Mo Beiqiu never expected that when he traveled through time, he was not killed by a dump truck, nor was he flushed away while sitting on the toilet, nor was he choked to death... But was delivered paper... When he woke up, he was told that he had arrived in a fantasy world. From then on, Mo Beiqiu began to practice hard in order to go home (and explore the reason for his death).