"Maybe," Mr. Mu said. "He carried out this plan himself, so even I couldn't disrupt it. To survive this crisis and drive back the Eternal Clan, we can only rely on power beyond the Star Source Universe."
"He?" Lu Yin was full of questions.
Mr. Mu looked at Lu Yin. "I've been your master for so long, yet I've never taught you one of my own battle skills. Now I'll give you two to choose from: first, Seek Ancient Source; second, Nine Suns Transforming Cauldron."
"Nine Suns Transforming Cauldron?" Lu Yin was surprised.
"That's right. The Nine Suns Transforming Cauldron you've already learned."
"But... is there a difference?" Lu Yin asked, puzzled.
Mr. Mu simply watched him in silence, leaving him to choose for himself.
Lu Yin wasn't stupid. Since he had already learned Nine Suns Transforming Cauldron, the fact that Mr. Mu was still offering it as a choice proved there was a difference.
He recalled the legend of Nine Suns Transforming Cauldron. It was a battle skill kept in the Dao Origin Sect Ruins, said to be invincible when the nine cauldrons were united. The Sixth Continent had spent countless years trying to learn it, but no one had succeeded. He never would have guessed that it was one of Mr. Mu's own battle skills.
In fact, Lu Yin hadn't used Nine Suns Transforming Cauldron in a long time. As his cultivation improved, its power had failed to keep up, and it no longer displayed the might of an invincible skill. But now, his confidence in it surged once more. There was only one reason: Mr. Mu.
"Master, what kind of battle skill is Seek Ancient Source?" Lu Yin asked.
Mr. Mu gazed deeply at Lu Yin. "A space-time battle skill."
Lu Yin's pupils shrank. Space-time?
"You've already