Compared to the Sound Transmission Array, Qi Tian had a better method. He planned to leave a Transporting Whirlwind at each location where he intended to set a trap, using the Transporting Whirlwind to replace the work of the Sound Transmission Array. Once Manager Chen popped up from one of the traps, the Transporting Whirlwind could react in the shortest amount of time. It was much faster than using a Sensing Array.
Truth be told, for Qi Tian at this moment, the biggest challenge wasn't the previously mentioned issues. Since he had chosen to use Millennium Corpse Water for setting traps, he then needed to find suitable containers for the Millennium Corpse Water, and in no small quantity. This was the real difficult problem for Qi Tian.
