While the various listening devices are quite sophisticated, Chen Rou still finds them lacking: they are all too large.
Having come from the future, she is accustomed to all manner of pinhole cameras. Looking at items from this old era, she cannot help but find them clunky and overly conspicuous. She has always felt that a truly excellent agent would spot them at a single glance.
After some thought, she called Chen Ke and asked, "Can these listening devices be made any more subtle?"
Chapter 531