All along, when upgrading the Boulder Mountain Saber, Lu Ye had always demanded it be heavy enough, so it would be convenient for him to slay enemies. As for its sharpness, he didn't care, because he could enhance it with spirit runes.
In an environment like the Nine Provinces, each time the Boulder Mountain Saber was upgraded, it could keep up with his cultivation progress and meet his needs for combat.
But it's different once he entered the stellar space, especially after encountering some powerful enemies. Lu Ye discovered that the Boulder Mountain Saber was not sharp enough to effectively harm enemies, especially those with strong physiques. Even if he enhanced it with Divine Sharp Edge, it still performed unsatisfactorily.
The battle with the Blood Hero of the Blood Race was the best example.
