章 409: Fist Cannon

"There's another problem I need to address soon." 

Leon began to frown in thought while his body was still glistening with sweat from his cultivation session.

"The first three stages of the [Black Turtle Heavenly Guard] technique required spirit, fire, lightning to temper my flesh subsequently. I was able to bypass these requirements by simply using pseudo-Grandmist Energy to cultivate."

However, there was a big problem if he wanted to continue cultivating the [Black Turtle Heavenly Guard] technique.

"From the fourth stage and beyond, the requirements become more stringent. Great pseudo-Grandmist Energy alone will no longer be sufficient to practice this [Black Turtle Heavenly Guard] technique." 

Leon pondered.