7 o'clock in the morning, August 5, the BESIII Main Drift Chamber started wiring. Engineers and technicians involved in the wiring would each day work in three shifts till midnight. Wire tension measurements would fall into the hands of the night-shift team.

　　After wiring three layers, the deformation of the Chamber undersurface, the tension of the layers as well as the leaking current of all the signal wires would be measured.

　　　　　　　　　  wire loosening and clipping　　　　　　　　 wire connecting and clipping

　　　　　　　　　　　　　　 wire cliping　　　　　　　　　　　　　　　　　　wire cliping