C1520 Method layering

One was the Slow Sword Path, the other was the Rainfall Sword Dao.

The Slow Sword Path needed to find the Fast Sword Dao within a hundred years. The two types of Dao would complement each other, and only then could one form a Dao.

The Rainfall Sword Dao was because Cheng Fei had yet to comprehend the Rainfall Sword Art, and would probably need a very long time to do so. Therefore