Core theme: Using the parallel world as a mirror to reshape clarity
The soul of this story is that the protagonist does not simply "predict the future", but has a dual vision that transcends personal grudges:
1. Blood feuds and memories from the past life: bring specific goals, clues and personal pain.
2. The macro-differences in the parallel world: allow him to break out of the original world's thinking, see the root loopholes in the system and culture, and carry out subversive innovations.
Based on this, the protagonist's struggle must not be "defeat one by one", but must be "systematic purification."