"[Microcosmic Spirit Condensation Technique of the Vast World]," was indeed a top-tier cultivation method for refining the soul and Yuanshen.
Second-generation disciples of Human Teaching, Sect of Elucidation, and Sect of Cultivation almost all had cultivated this type of secret technique for the Yuanshen, and even a few extremely talented third-generation disciples had practiced it.
However, whether they were second-generation disciples or third-generation disciples, they almost only received the first half of the "Microcosmic Spirit Condensation Technique of the Vast World."
The latter half of the cultivation method had to be personally imparted by a sage.
Because the first half was the practice for those at the pinnacle of the Ancient Immortal (Immortal Emperor) realm and below, while the latter half was the method of cultivation for Immortal Emperors (Quasi-Sages) and even Sages.