C40 Photo Search
"Hello, have you seen this man?" Jiang Cheng held an A4 paper with Lee Mubai's profile picture on it and asked whenever he saw someone.
This was a high-tech method. Jiang Cheng only prepared a stack of paper as the basic material and used the system to send out this extremely high pixel photo.
Jiang Cheng was blind, and he had terrifying facial recognition barriers. For example