C434 Invitation from a Mysterious Person

"This... No signal is allowed in the hospital or within 10 km around the hospital. We've built our own signal platform here, so you can use our platform, but even if there is a signal, it's still a local network. You can contact people in this area, but you can't contact people outside the area. "

The nurse said in detail.

"I can only contact the district. The district is this hospital?"

"Yes