Murong Qingcheng's guess had been correct. When Ye Chen broke through to the Half-Step King realm, he had indeed raised the Azure Lotus Swordplay to the Heaven-grade.
In fact, Ye Chen had long felt that the Azure Lotus Swordplay was being restrained, as though some invisible barrier were preventing it from breaking through. Since the Battle King's experience differed from Ye Chen's—he had created a Heaven-grade Cultivation Method himself only after reaching the Life and Death Realm—the Battle King's experience could not explain this matter. Ye Chen had not given it much thought then.
Thinking back on it now, this should have been due to the Azure Lotus Swordplay's unique nature. After all, when he had first obtained the Azure Lotus Swordplay manual, it had stated that both the Azure Lotus Swordplay and Azure Lotus Sword Style could break through. Later, the Azure Lotus Sword Style had given rise to a Heaven-grade Martial Art, namely the Mystic Martial Art—Endless Cycle—yet the Azure Lotus Swordplay had shown no movement.
"Heaven-grade Martial Arts are Mystic Martial Arts. Although Heaven-grade Cultivation Methods have little to do with mystic truths, they still contain an unfathomable power, like the Heavenly Dao itself. The Heaven-grade Cultivation Method created by Senior Battle King was the Platinum Sword Body, uniquely blessed in defense; ordinary Kings could hardly harm him in the slightest. I wonder what special effect my Heaven-grade Cultivation Method, the Azure Lotus Swordplay, has."
Intense azure currents burst forth all over Ye Chen's body. These azure currents were incomparably sharp; with the slightest combination, they could form indestructible Sword Qi. That Sword Qi which had just torn heaven and earth apart had been formed by an explosive burst of azure currents.
"Disperse!"
Ye Chen gave a low shout and controlled the azure currents around him to