The easiest way to solve this problem is to have Sun Jie shout loudly after encountering the killer and scuffling with the murderer as a cue.

But this method is not very reliable, not to mention whether Sun Jie will obediently act according to the instructions, what if the murderer has a gun? What if Sun Jie was put down by the murderer as soon as he showed up?

There is an even worse possibility: in the unfinished building without lighting, it is difficult to see Sun Jie's small movements from a distance, and if he is asked to secretly tear off the tape behind him, the consequences will be unimaginable.

Fortunately, these questions were thought of in advance.

Fang Ziyu sweated for himself, and at the same time praised the IQ Jun who was constantly online in his heart, eat a trench, grow a wisdom, the previous losses were really not in vain.

As long as potential problems are found, it is not difficult to solve them, Fang Ziyu thought for a moment and came up with a solution, he took out a wired headset with a headset from his computer bag, this kind of headset is very common, it is used in various brands and models of mobile phones, it can be bought in boutiques, digital stores and convenience stores, and from time to time you can see someone wearing this headset to make a phone call.

"Phone, take it out." Fang Ziyu beckoned, took Sun Jie's mobile phone, inserted the earphone plug into the jack, and then stuffed the earphone cable into Sun Jie's clothes, and said, "Reach into the clothes, pull the cable up, pull the headset and headphones out of the neckline and put them on." ”

In the past, Fang Ziyu often wore headphones like this when he was in junior high and high school, only wearing one side, and then supporting his head with his hands, covering his ears, and listening to songs in class.

After Sun Jie did as he said, Fang Ziyu took out his mobile phone and shook it, saying: "Now I will add your WeChat, and then call you WeChat voice call, remember, WeChat voice can only be interrupted in one case, wait until he calls you, WeChat voice will automatically hang up, I will stare at you not far away, so you don't do any extra small actions, don't say more, try to control the call time within ten seconds, if you can answer with one word, don't use two words, wait until the phone hangs up, you immediately call back WeChat voice, Remember? ”

If you say too much, you will lose, and the more Sun Jie says, the greater the possibility of revealing flaws, so Fang Ziyu warned him not to say more.

WeChat used to add friends is a small account dedicated to registering all kinds of mobile games and application software, and there is basically no possibility of revealing personal identity information, after adding friends, Fang Ziyu took out a pure black mask from his bag and ordered Sun Jie to put on the hat and mask.

He was asked to wear a hat to retain water from his hair and to cover up.

And letting him wear a mask is not only to cover the headset and headphones, but more importantly, to lay a psychological trap.

Since the real culprit behind the scenes found Sun Jie, he must have done some investigation on him, so he must know Sun Jie's appearance, under this premise, when he sees Sun Jie wearing a mask, he will inevitably be puzzled, and he is likely to subconsciously make a move: take off Sun Jie's mask and look at his face.

As long as this trap works, even if Sun Jie is put down by the murderer when he meets, it doesn't matter, the murderer will still have close contact with him, and Sun Jie is drenched in salt water, which is enough to form a breakdown effect when the air humidity is sufficient.

This is the last insurance, if even this trap doesn't work, then Fang Ziyu can only choose to call the police to stop the murderer, he has made up his mind that he will never go into battle in person and take the risk of hand-to-hand combat.

Fang Ziyu's plan is to stay near the unfinished building and wait and see, if he can successfully put down the murderer, then interrogate him and leave a recording, even if it is not enough to convict him and send him to prison, he can also send the recording as evidence to Ying Yingying and Ying Chucheng, so that they can be vigilant.

Now is the era of money first, the Ying family is so rich, there must be a lot of energy, maybe they will find a way to strike first, when Ying Chucheng and the real murderer behind the scenes eat dog, Fang Ziyu just watch the show, after all, he only wants to protect Ying Yingying, and he doesn't want Ying Chucheng to die, but also to get more future observation index, as for the personal safety of the murderer? It's all about him.

If the battle plan fails and the murderer is not put down, then call the police immediately and save Sun Jie's life as much as possible. Although calling the police will cause a lot of trouble, you can't just watch Sun Jie be killed in order to escape trouble.

If you really want to be so cold-blooded and ruthless, Fang Ziyu just has to let Sun Jie die, wait for Sun Jie to die in the hands of the murderer, and then find a way to anonymously call the police and let the police track Sun Jie's mobile phone and car, most of them will be able to catch the murderer, and by then the murderer has already killed someone, the evidence is conclusive, and he will definitely be controlled by the police.

But doing so is no different from murder, Fang Ziyu can't do it.

………………

Everything that happened next went smoothly, Sun Jie appeared in the open space on time and received a call from the real murderer behind the scenes.

Sure enough, the other party asked to change the transaction location to unfinished, which was completely in line with Fang Ziyu's prediction.

After receiving the news, Fang Ziyu, who had been hiding not far away, lowered his voice and conveyed instructions to Sun Jie through WeChat voice, asking him to wet the top of his head and clothes with the second bottle of salt water, and slowly walked up to the sixth floor counting the beats.

The reason why he had to count the beats and walk slowly and take a step in two seconds was because Fang Ziyu had to follow him, and the two of them were separated by one floor, and if they kept their steps in the same place, it would be difficult for the people upstairs to find the clues.

And Fang Ziyu can clearly hear Sun Jie's voice through headphones and WeChat voice, as long as Sun Jie and the murderer scuffle together, they will be discharged immediately, even if Sun Jie is put down when they meet, it doesn't matter, as long as the murderer reaches out to take off Sun Jie's mask, the headset in the mask will emit a friction sound, and when he hears the friction sound, he will discharge, one electricity and one accurate.

Such a delicate trap is not afraid of the murderer.

Knowing that the murderer was upstairs, Fang Ziyu thought that he could easily take him down, but he didn't expect that when he went up to the third floor, something happened suddenly.

Suddenly there was no sound in the headphones!

Even if Sun Jie doesn't speak, there should be sound in the headphones, because the headset is placed in the mask, Sun Jie can make a sound every time he breathes, but now the headphones suddenly became silent! I could only hear Sun Jie's footsteps from upstairs.

Fang Ziyu hurriedly took out his mobile phone and saw that the WeChat phone showed that the network was not in good condition, and the signal vendor logo in the upper left corner of the mobile phone screen had changed to three words: No service!

There is no signal on the phone!

Fang Ziyu chuckled in his heart, and his hairs stood on end in shock, not knowing what to do.

The footsteps upstairs did not stop, and Sun Jie must not have noticed that the WeChat call had been interrupted, after all, his nervousness level was far higher than that of Fang Ziyu.

Fang Ziyu stood in place for a moment, gritted his teeth and raised his legs, and stepped three steps at a time, only by stepping two or three steps per step could he catch up as soon as possible.

At this time, the ordinary steps seemed to have become a dangerous road next to the cliff, and the slightest carelessness would be a catastrophe, Fang Ziyu felt that his legs and stomach were a little weak, but he did not stop.

More than ten seconds later, Fang Ziyu, who had just walked to the fifth floor, heard a muffled sound at the entrance of the sixth floor, and someone fell to the ground!

Fang Ziyu froze for two seconds, then squatted down and took off his shoes, threw himself on the steps, and climbed the steps like an animal, because it was his palms and toes that touched the steps, the sound was minimal.

When he climbed to the bottom of the entrance of the sixth floor, he looked up and saw a figure squatting next to Sun Jie, and Sun Jie had fallen to the ground motionless.

All the other party's attention was on Sun Jie, and he didn't notice that there was a pair of eyes staring at him downstairs.

Fang Ziyu held his breath, and when the man reached out to take off Sun Jie's mask, he suddenly got up and rushed upward, and at the same time, his mind turned, causing the electric shock ring to release an electric current that was enough to paralyze the muscles and even faint.

Through Sun Jie's shirt, the electric shock ring emitted a dazzling light and pierced Jiang Lan's eyes.