C1461 Heavenly Jewel Academy has a lot of suspicious points

Behind the wooden door was an office, not too big. There was a desk and a bookshelf filled with books.

Xia Lei's line of sight followed the direction of the sound and landed on the bookshelf. Passing through the bookshelves, he saw a hidden space. A few steel ropes were in operation, and an elevator was quickly being pulled upwards