Longevity starts with strengthening the internal organs

The five internal organs are the heart, liver, spleen, lungs and kidneys, and the six internal organs are the small intestine, gallbladder, stomach, large intestine, bladder and triple burner.
The five internal organs and the six internal organs complement each other and store essence and qi, which are the foundation of the human body and the foundation of spiritual practice.
Zhao Ya, who traveled to a time of great chaos, has an attribute panel on his body, and an outline map of the internal organs and meridians of the human body waiting to be unlocked. Each time an organ is successfully unlocked, his lifespan will increase, and he will gain access to various magical uses.
But Zhao Ya knew very well that in this world, there was great cultivation and strong people, so he had been cautious and developed silently in a small escort agency.
Unlock the stomach of the six internal organs and obtain the talent [Micro Water and Grain], which greatly increases your digestive ability. It can decompose water and grain, absorb the essence and transform it into microorganisms.
Unlock the kidneys of the five internal organs and gain the talent [Maintaining Bones to Generate Marrow]. The kidney energy is abundant and can transport water and fire, balance yin and yang, make bones strong, teeth strong, and brain prosperous.
Eight Parts of Vajra Gong: Through eight movements, it coordinates the internal organs, eliminates turbidity and regulates qi, thereby eliminating diseases, prolonging life, and extending life.
This book is also called "Longevity Begins with the Eight Parts of Vajra Kung Fu".