Actually, Zhao Yu had already expected such a situation to occur. He knew that the mysterious murderer would definitely contact him, and would most likely use Ding Lan as a hostage.
Therefore, he had communicated with Xiao hang in advance, and the two of them had already discussed countermeasures.
Once Zhao Yu took off the listening device and the tracking device, it would be the same as telling Xiao hang that the enemy had contacted him and was threatening him.
At this time, not only could Xiao hang not immediately take strict measures against Zhao Yu, but he also had to stay a certain distance away from Zhao Yu to give Zhao Yu some space and help him keep his secret.
When Zhao Yu felt that the time was right, he would let Xiao hang and the others take action.
Zhao Yu's decision was undoubtedly very risky. At first, Xiao hang was against it, but how could he persuade Zhao Yu? in the end, he could only reluctantly agree.