Teamwork

Jiang Cheng took the lead in taking out the wire rope and starting to build the transmission device.
During this time, Wang Sandou took out a miniature headset from his large backpack and handed it to the three people, claiming that it would facilitate communication.
After building the transmission device with steel wire rope, Jiang Cheng first sent Wang Sandou to the roof of the opposite building. At this time, it was exactly 21:00, the action time.
"start to act!"
Wang Sandou's...