Wang Qi had early on positioned himself as a "Seeking Dao Seeker". He felt that indulging in the power of spells was actually a laughable matter.
Apart from just having experienced a disaster, having an improper mindset, and dealing with the Martial Arts Examination at the Immortal Institute, he never had the intention to learn spells purely for their power. To him, this practice was not about helping himself familiarize with and master the Cultivation Techniques, but to verify his own theoretical ideas.
The greatest significance of cultivation was to sublimate life, turning oneself into a completely open system, similar to a dissipative structure, maintaining one's Negative Entropy to achieve Longevity Sight.
And for a Seeking Dao Seeker, the greatest significance of "Undying" was the ability to have enough time to explore the natural laws.