Mu Zhixing's departure didn't cause any commotion in the Xu Ling Grotto-Heaven.
There were only a handful of people in the entire ancestral land who knew Mu Zhixing.
And apart from Zhou Shu, no one knew Mu Zhixing's true identity.
He came quietly and left quietly.
When he came, he had brought nothing with him.
When he left, he took away the Freedom Transformation Technique.
Zhou Shu didn't tamper with the cultivation technique.
Although the Freedom Transformation Technique was powerful, it was far from being Zhou Shu's strongest technique.
Moreover, even if it was the same cultivation technique, it depended on who cultivated it.
Zhou Shu didn't think that Mu Zhixing would be stronger than him just because he cultivated the Freedom Transformation Technique.
Zhou Shu's cultivation method was unique in the world.