660 Xiaonu, Come Back!

Jiang Yi didn't know something.

There were actually two methods to obtain thunder stones in the Sky Thunder Island. The first option was to wait for a thunder stone eruption in the nearby vicinity of thunder mountains. The second was to dig for thunder stones at the thunder ridges.

In normal situations, everyone would normally travel the main path towards the thunder mountains and wait for the thunder stone eruption before snatching for it as this place was the safest. There would be a spike in temperature when the Thunder Fire was about to spur out from the mountains, allowing everyone to back away in advance. Furthermore, these ten thunder mountains were separately occupied by the ten chiefs, which wouldn't cause any conflicts or disputes.