One could only deduce and decipher them from the faintest of clues.
Just as He Song had discovered those nine arrays within the Vast Wave Secret Realm before.
The previous He Song had never detected the existence of those nine arrays.
It wasn't until the cultivators from Wind Snow Palace used the Spiritual Banners to activate the arrays one by one that He Song realized their existence.
If those nine arrays had remained inactive, it would have probably been very difficult for He Song to detect them.
After all, if one couldn't be certain that a Golden Elixir Array was present in the area, no one would likely spend a significant amount of energy there.
Just like He Song had done.
When He Songzhen initially conducted a thorough search of the Vast Wave Secret Realm, it was impossible to devote a large amount of energy to a single area within.
Because initially, he had no knowledge of whether there was a Golden Elixir Great Array in the Vast Wave Secret Realm at all.
