*Boom*
The rock split into two parts and fell off the larger rock. The student's eyes were glued to the rock, and most of their jaws were dropped as they witnessed this impossible feat.
"It broke, I thought if I used my left hands it wouldn't break," Jake said and smiled.
"So we are moving on, sit down this may take a while," Jake said and walked towards the wooden chair and sat down.
The students were still shocked by what happened, they never expected that a sword could actually break a rock. Ray on the other hand was dumbfounded, he didn't expect Jake to be this strong.
"Sir how come if you hit the rock it wouldn't break?" the boy who tried the first time asked.
"That's what I'm going to explain, sit down"
"Okay, the Ki in our body is a flow of energy, that flow can be used on our own cells. That means Ki can be used to strengthen a human body to be as strong as a rock, people who master Ki are even able to slow down the process of aging."
"Sir I have a question"