The purpose of this sign is to study and sign, which means that as long as the applicant focuses on his studies and has no distractions, it will be smooth sailing and achieve his goal.
The so-called cancellation means having a sign first, and then according to the description of the sign, all kinds of knowledge, wisdom, astronomy, geography, etc. They are all used to explain the meaning of symbols, which come from religion and are a way of trying to understand things.