After that day, they said that since ancient times, clouds, water, and fire have been incompatible, and the distinction between water and water has been clear. The most important thing is that no blue fly is left on a white wall. Black and white cannot share the same path, but can only take different paths. Ice is extremely pure, while charcoal is extremely filthy. When thrown into the same furnace, the ice melts, even the water becomes turbid, but the charcoal also burns to ashes.
But I think that's not entirely the case sometimes.
Purpose: Resistance after being oppressed