Chi Jintang traveled through time after his death, but he forgot everything that happened before his death. The system promised that as long as he completed the tasks in the three worlds, it would help him retrieve his memory and choose a world to continue living in.
When he came to a world and saw the male protagonist, he felt familiar, but his memory was incomplete so he couldn't remember who the male protagonist was, but he still felt familiar.
Purpose: mobilize subjective initiative and transform the objective world