Thunderbolt was Xin Yun's trump card, but precisely because of this, he couldn't casually reveal it, and even... relying on Thunderbolt, he could keep charging ahead, but with the experience from his previous life, Xin Yun understood that talent was most important. Anyone who relied on formidable powers would inevitably fail to become a top-tier master in the end.
Speaking of power, Xin Yun from his past life was probably even stronger. As a Fire Series Divine Dragon, launching Violent Fireballs like rockets, a barrage would bring down many opponents, but what of it?
While experts all possessed powerful attacks, not everyone with a powerful attack was an expert. What truly indicated whether one could become a real expert wasn't just this, hence... Thunderbolt could only be the trump card, never the reliance.