The background wall is ten meters high, and the curtain is in the steel frame, which is convenient for the organizer to arrange the hotel. The elevator is used to hang the advertising curtain and then reinforce it. If it falls forward, it will not be fatal, but many people will be injured.

There is a palm-length gap at the top of the background wall, and the light source shines through from the top. Qiao Xinwei can see more clearly that Cao Zekai is unwinding another thick rope to strengthen the steel pole.