After defeating Third Kazekage Retsuji, Shang Qi returned to Sunagakure.
Shang Qi knew very well of Chiyo's profound attainments in medical Ninjutsu, as well as her deep dedication and focus on the medical field outside of the Puppet Technique. Upon this return, he also carried a special "gift"—the technique of Activation and Regeneration obtained from Shennong. Shang Qi had carefully duplicated it, intending to present it to Chiyo in exchange for the Rebirth of the One-Own Life.
After all, Chiyo was not only a renowned puppeteer, but also a highly skilled medical ninja; to a medical ninja, this Activation and Regeneration technique carried truly immeasurable significance.
Chapter 52