Martial Body [2]

"So this is the martial manual?" 

As I slowly opened the pages of the book in front of me, I stared carefully at the words on the pages. It was then that I noticed that it wasn't only filled with words, but images as well. 

In each image was a depiction of a different stance. 

[Body hardening] [Mind Spirit Connection] [Martial body] 

Pointing at them, I raised my head to look at Han Yufei. 

"I've already seen what martial body does, and I already have an idea of what body hardening is. What about Mind Spirit Connection? What is that?" 

"Mind Spirit Connection?"

Leaning forward, Han Yufei pointed at a certain illustration that depicted a person sitting cross-legged with their arms linked together right towards the abdomen area.