He-El, Yamcha, Puar, Goku, and Krillin did not take any aircraft. They intended to travel all the way from the Red Ribbon Army headquarters to Korin Tower on foot.
Along the way, He-El taught Yamcha, Puar, Goku, and Krillin the most precise methods of training Ki for their respective constitutions.
Goku possessed a Saiyan constitution. Without a doubt, recovering from the brink of death could maximize his Battle Power, and the method He-El taught Goku for training Ki was likewise the most extreme.
It involved extreme recovery, restoration, and Battle Power—continually surpassing oneself at the boundary between life and death, like a phoenix reborn from the ashes, gaining ultimate regenerative power and extreme strength.
"Goku, your constitution is unique. You could be said to have bones of steel and iron. I see an extreme sense of power and fortitude in your body. The training method I created for you possesses nearly invincible healing effects and the power to survive from the brink of death. Train according to this... Ultimate Qi Training Technique!"
He-El had casually named it the Ultimate Qi Training Technique. It had been created entirely based on Goku's Saiyan constitution, allowing Goku to treasure it as he brutally trained himself, revived amid that torment, and forged a Battle Power that would not yield even after a hundred deaths!
"Yes, Big Brother He-El!" Goku leaped up excitedly and immediately began training as though he had obtained a priceless treasure.
Walking through the dense forest, He-El nodded and turned to look at Yamcha and Krillin, who waited eagerly for him to speak.
Yamcha and Krillin were both first-rate geniuses on Earth, but in terms of constitution, neither could compare to Goku no matter what.
"Yamcha, Krillin, you are both first-rate geniuses on Earth—arguably the most gifted geniuses in the world