Situ Xin had no idea that she had already caught someone's attention. After she had sent Situ Muli away, she took the documents with her and returned to her room. When she entered the room, she casually locked the door behind her.
Then, holding the documents, she flashed into the space. However, before entering the space, Situ Xin left a strand of her Divine Sense in the room in case anyone outside called for her, so she wouldn't miss it.
The time in the space was ten times slower than the outside world. The amount of information that Old Deng and Xiang Yang had given her was so vast that if she had gone over it outside, even working overtime, it would have taken at least two days. But in the space, it would be much faster.
Furthermore, the space was rich in Spiritual Energy, which kept one from feeling tired too easily.