The learning difficulty of the Sword Rain Meteor Formation was not inferior to that of the Pill Spirit Array, but with Lin Chen's previous experience in formation setup, he learned it at an extremely fast pace.
After observing the talisman inscriptions of this Killing Formation three times, Lin Chen had completely mastered it. However, since the Killing Formation was to be used on multiple people, to prevent accidents, Lin Chen observed it one more time before his Divine Sense finally withdrew from the space within the Primordial Myriad Transformation Cauldron.
At this moment, a bright light came from outside the tree hollow. Lin Chen walked out, ready to teach this Killing Formation to everyone for practice. What level they could achieve was up to them, and it was related to their combat readiness for future improvements.
"Junior brother, you finally came out. How is it, has your Spiritual Power recovered?"
