Outside the courtyard.
"Xie Family Head, come in!" A voice rang out from nowhere beside Xie Zhengtian's ear.
His whole body shook at once.
Sound Transmission into Secrecy!
His heart grew even heavier.
As the Xie Family Head, he naturally knew of a method like Sound Transmission into Secrecy.
It was usually a method only those in the Fifth Grade Inner Strengthening Realm could grasp.
One had to master Inner Breath, and Spiritual Power had to turn from void to solid, reaching the level where it could leave the body, before one could use such a minor method as Sound Transmission into Secrecy.
Precisely because of this, Sound Transmission into Secrecy was usually a method only powerful experts of the Fifth Grade Inner Strengthening Realm could grasp.
"I can't afford to offend him!"
Xie Zhengtian could not help sighing inwardly.
Only then did he step into the Great Dao Courtyard where Jiang Ning was.
Stepping into the courtyard, he immediately saw Jiang Ning dressed in a loose white training outfit, slowly rising from a prayer mat.
"Sitting in meditation to cultivate... Could Jiang Ning have been cultivating the Internal Strengthening Method just now?" Thinking of this, Xie Zhengtian could not help raising his head to glance at the Great Sun overhead.
In his mind, he immediately thought of the seated breathing method he had once seen Shen Congyun practice.
Then, in an instant, he connected it to the relationship between Shen Congyun and Jiang Ning.
"No wonder!"
Xie Zhengtian immediately felt a little enlightened in his heart. He felt that he understood where Jiang Ning's Internal Strengthening Method had come from.
"If that's truly the case, then this is terrifying to the extreme!!!"
Instead, he understood Jiang Ning's terror even more clearly in his heart.
The Internal Strengthening Method, normally