In the hazy dusk of twilight, clouds had covered the sky. Sitting beside the bonfire, Lin Yun toyed with the Profound Lightning Bead in his hand and muttered, “No wonder this is a precious treasure. There’s still one-third lightning energy left even after half a month…”

He had already left the Thundercloud Treasury for twenty days and he would spend about five hours every day refining the Profound Lightning Bead with the Azure Dragon Enneaform.

The effect was pretty good as his Azure Dragon Enneaform had been improved quite smoothly. After all, this was a lot better than the beast core of a lightning attributed demonic beast. As he cultivated, more secrets began to appear from body-refining martial technique. Purple lightning runes had started to appear and spread out around the Azure Dragon Mark that slowly strengthened his physique.

After a series of experiments, Lin Yun discovered that the lightning runes weren’t the same as those manifested from his own strength. He now had thirty cauldron’s worth of strength, which had converted to eighteen lightning runes. There were still twelve lightning runes left and he speculated that he should be able to completely convert his strength after refining all the remaining lighting energy in the Profound Lightning Bead.

After that, he wouldn’t have to convert anymore as any increase in his strength would come from the Azure Dragon Enneaform. Lin Yun clenched his fist tightly and soared into the sky before throwing out a punch.

In the next second, the Azure Dragon Mark on his heart emitted a purple light and the eighteen lightning runes came to life as they crawled on the surface of Lin Yun’s body, moving towards his arm with surging power.

Along with a rumbling lightning, a three thousand meters crater appeared on the ground with dust flying through the air. At the bottom of the crater, one could still see lightning flickering. This left a satisfied expression on Lin Yun’s face because this punch could confront a pinnacle lesser Yin-Yang stage expert. However, he didn’t know if it would give him an advantage against those geniuses on the inner ranking.

After all,...