Qin Guang had already asked Wu Bai Xiong to purchase medicinal materials that were over a hundred years old, but right now, the most important thing for him was to transform his Dantian from the Acquired to the Innate.
Only by doing so, the True Qi he cultivated henceforth would be Innate True Qi and wouldn't contaminate the Acquired True Qi that had already completed its transformation within his body.
Once this step was finished, he could start trying to prepare medicine to attempt the conversion of True Qi into the ethereal Spiritual Power of immortal families.
Fortunately, within the Heaven Stealing Longevity Skill, there was a method left by his mother for converting Acquired to Innate.
He didn't need to wait until breaking through to the Innate Realm to accomplish this step.
He only needed to continually stimulate the Dantian with True Qi to advance it from the Acquired to the Innate.
