Yimu Chang Chun Skill, from the name alone it's clear this is a cultivation technique that emphasizes longevity.
Practicing this skill can prolong life, rejuvenate the body like spring returning to withered wood, and reverse aging.
Simply put, it turns white hair to black, erases wrinkles, revitalizes an aged body, allowing a person to live an additional decade or even several decades.
If one masters it, they can then wield Yimu True Qi. Such True Qi is the concentrated Jin Qi of a Postnatal Martial Artist, whereas the hallmark of an Innate Martial Artist is the ability to release True Qi.
Different cultivation techniques endow one with different characteristics of True Qi.
The quality of Yimu True Qi is its enduring and long-lasting nature, supporting a martial artist in prolonged battles without draining their energy.