What are the red and blue lines in the biography of Cao Cao in the Three Kingdoms?

The red line is the treacherous line, that is, Cao Cao's road to hegemony, and the blue line is the heroic line (Guan was closed and BOSS was controlled by the devil). It feels a bit like the brave fighting the dragon. The length of the red line is the development of the heroic line, the blue line is the heroic line, the all-blue line is the heroic line, and the all-red line is the heroic line. In fact, there is a golden line, but it is more troublesome.