If something unexpected happened to the Astra, they would inform Samoa to deal with it.
Therefore, Merlin had no worries and could continue to study these magical letters.
Without knowing how much time had passed, Merlin finally finished studying all the magical letters engraved on the green wall.
The green wall contained two thousand and seven hundred magical letters, divided into twenty-three holy magical letters, one hundred and thirty-four ancient letters, and the rest were normal-level magical letters.
There were also duplicate magical alphabet letters. Once the duplicate ones were removed, there were eleven holy letters, twenty-seven ancient letters, and the rest were ordinary ones that Merlin did not care about, in the Lemegeton Encyclopedia.