Jiang Xun led them to another teaching building and introduced it to the people from the production team. "This is our school's laboratory building."
"For classes like computer, biology, physics, and chemistry, which sometimes require hands-on experiments, they will come here. There's also a large multimedia classroom that can be used for public classes and lectures."
"According to the clue, we should follow the nine o'clock direction of the sun. I've done some calculations, and it should be the laboratory building," Jiang Xun said. "The second clue says that the sun falls on 13,17, and 25.
"13 can also be seen as E1. This is because the top floor of the laboratory building, which is the fifth floor, has such a design. The floor plan from the sky is a combination of E and 1. It means that the second clue is hidden on the fifth floor."
