As he explained this cultivation technique, Zhang Dao Xuan was naturally paying attention to the subtle changes in Lin Yi's expression. Even though it was just a strand of his consciousness, it was still separated from his Divinity Transformation main body.
He then asked, "Lin Yi, just now you seemed quite distracted, as though you were not interested in the Yi Wood Longevity Technique, do you have a better cultivation method?"
It is rumored that this method was left behind by someone who ascended to immortality, therefore, even his main body regards it as a treasure in the Cultivation World. It's designed to make the cultivation of the Alchemy Dao more fruitful.
For the cultivator themselves, it is also tremendously helpful, increasing one's lifespan and renewing the foundation of the body can provide the cultivators with the ability to preserve their lives.