Yan Fei had no idea how frustrated the special agents from the Special Duty Group were because of him. Although they didn't find Yan Fei, they did manage to retrieve the most important data, which was a cause for some relief amidst the loss.
When Yan Fei contacted the China Special Duties Unit, he subconsciously wanted to keep it confidential, not wanting to expose his identity. That's why he used the Drone Assisted Intelligent Brain to connect to someone else's WIFI and get in touch with the China Special Duties Unit. Though the Auxiliary Brain couldn't break through the internet restrictions to access hidden information, if someone detected it using their WIFI, they still couldn't trace its whereabouts—truly a ghost of the network.
