As for the possible danger, Lin Yi didn't think there would be any at all. First of all, LAN Guzha was already at the peak of the early stage of mysterious Ascension. As a sea serpent, his body was far stronger than humans. It wouldn't be a problem even if he took a few lightning tribulations. Besides, Lin Yi didn't have anything else, but he had enough pills. One Thunder mystical pill was enough to make LAN Guzha completely safe.
Although he'd finished reading the Thunder gathering formation, it was obviously impossible for Lin Yi to set up a Thunder gathering formation himself. The materials were a problem, and Lin Yi's formation skills were a problem as well. Fortunately, the Thunder gathering formation here was set up long ago, and even if it was in disrepair, Lin Yi could still fix it.
"LAN Guzha, let's continue. There's a Thunder gathering array here. I'll let you try it out when we find it." Lin Yi didn't have any intention of hiding anything and told LAN Guzha.
