Di Renjie has a token that he carries with him and always keeps it with him. The reason is that it was a token that he gave to his lover. His lover carved his name on the back of it and gave it to him as a gift.
However, the token disappeared out of thin air. Di Renjie couldn't remember where he landed, let alone why the token was missing. I vaguely remember that last night I went to bed as soon as midnight passed as usual, but why did the whole night disappear?