With this in mind, He Song quickly began planning the future use of his spirit stones.
First of all.
Skills!
Skills are cheap - a common Qi Refining skill only costs ten spirit stones.
Although special skills for the Qi Refining stage are slightly more expensive, they should not be too costly.
He probably wouldn't have to spend many spirit stones to learn all the skills he would like to learn.
This is the easiest way to increase one's strength.
Moreover, there are many Qi Refining skills that have various unique applications and can greatly contribute to other aspects of one's abilities.
For example, the Spirit Vision Skill, Sound Transmission Skill, or Breath Concealment Formulas are just like this.
Of course, practicing skills takes a long time.
But He Song has a stronger soul than ordinary cultivators, as he came from another world, and his learning speed for skills is also much faster than ordinary cultivators.