"The door seemed to be jammed. I'll call someone to open it," Teacher Kang said before bringing out his phone. After a moment, he said, "Why is there no signal? There was still signal before this…"
Xu Youyou, who was curled up in her sleeping bag, raised her hand and covered her lips as she coughed again. A contemplative expression could be seen on her face at this moment. After that, she brought her phone out to check for signal as well. Indeed, there was suddenly no mobile coverage in the room. Strangely, she could not even connect to the Wi-Fi. She looked around and discovered there was no phone in the room as well. This meant that she and Teacher Kang were trapped in the room.
Teacher Kang turned to look at the listless Xu Youyou and said reassuringly, "Don't worry. The others will look for us when they notice we're missing…"