After learning Ryūchi Cave senjutsu, Su Zheng improved the Seven-Day Breathing Method. By combining the Breathing Technique with bodily activation, he not only comprehended the "Regeneration Technique," but also increased the Seven-Day Breathing Method's overall power a hundredfold!
His "Regeneration Technique" had no flaws. It did not require a massive consumption of Chakra, did not drain life force, and did not require hand seals. It was far stronger than Tsunade's Hundred Healings Technique and Hashirama's seal-less healing.
The drawback, however, was that one had to learn both the Breathing Technique and senjutsu. It would be difficult without talent, though he believed that problem would be resolved.
Land of Lightning, Mishiro En's residence.
"Train properly! If you can't win, you don't get food!" Mishiro En said to a group of children.
Bang! Chiyo was knocked down again. She could no longer remember how many times she had fallen, and she had not eaten for two days!
She did not understand why these children had to undergo ninja training together. Perhaps they were merely that man's tools.
Chiyo got to her feet and looked at her opponent. A little boy raised a kunai and stabbed at her.
"Ah...!" Chiyo roared. Her pale blue pupils turned blood-red, and her opponent instantly collapsed unconscious.
"Excellent!" Mishiro En, their master, praised her as he rubbed her head.
The estate was enormous, and they had never been allowed outside. Anyone who tried to escape would receive a brutal beating.
She had heard that they would soon participate in the fighting arena and win other people's cards—ninjas—for their master.
At dusk, Chiyo sat in the courtyard and gazed curiously at the sky. She truly wanted to see the world outside, but she could not even remember her own parents!
Whoosh! Su Zheng arrived at Mishiro En's residence