The architectural style of this Teaching Building contrasted sharply with the previous three blocks. If not for the Corridor Bridge connecting them, it would have been difficult to associate it with the Teaching Building at all.
He thought this way because the first thing that popped into his mind were the relevant rules.
The first rule of the Teaching Building stated, "The Teaching Building consists of three blocks: Block A, Block B, and Block C. Each block has four floors, and each floor has three classes, ranging from Class A1 to Class A12 in ascending order.
There is a bridge connecting each block on every floor, enabling one to walk across."
And then there was rule number two, which completely contradicted the first:
"Proceeding to Teaching Building D Block is prohibited."
If there are only three blocks, why was there a specific declaration to avoid Block D?
Clearly, D Block existed, yet it usually did not.
