Chang Yeye's face was overjoyed, and he jumped up excitedly, his eyes were full of expectation, Luo Chuan rolled his eyes, and then suppressed Chang Yeye's restless heart and said.

"Listen well, it's still those two sentences, don't talk anymore, follow me, understand?"

Chang Yeye nodded wildly like pounding garlic, Luo Chuan saw this, so he relaxed a little, and then pushed open the door and returned to the corridor, and after Chang Yeye behind him also came out, he gently closed the door.

Luo Chuan walked down the corridor, and there were many footprints on the dusty steps that were vaguely left with the same footprints as in the house, which was good news for Luo Chuan.

After walking out of the corridor, the footprints are not so obvious, Luo Chuan needs to lean down to carefully and carefully inspect to observe, but everything is only the beginning, if you find the first footprint, you can deduce the direction of the person's action through the direction of the toes.

Luo Chuan was not in a hurry, because he might miss the clues if he was not careful, and after probing around the entrance of the building for nearly five minutes or so, a smile appeared on the corner of Luo Chuan's mouth.

"Here it is. ”

Seeing this, Chang Yeye ran to Luo Chuan's side, and found that the location Luo Chuan's gaze pointed to did have a vague outline of footprints, Luo Chuan roughly measured the size of the footprints with his palm, and after judging the position of the toes, he stood up and continued to walk forward.

At this time, it is already the end of December, and the weather is very cold, especially at night, when the cold wind is howling and the cold air is pressing. At this time, a gust of cold wind blew, making Chang Yeye shiver.

Chang Yeye only wears a coat on his body, which does not block the wind and does not keep warm, as for why he wears this coat, hmm...... Because it's good-looking, that's all, when I first left the house, I didn't feel so cold, but now after the passage of time, the cold has been really felt.

Chang Yeye hugged his shoulders with both hands, his teeth were shivering, and he followed Luo Chuan silently for fear of disturbing Luo Chuan's tracking.

Luo Chuan was leaning over to track the direction of the footprints, when another gust of cold wind blew, and the cold wind drilled into Luo Chuan's collar, making Luo Chuan feel cold, and then hurriedly stood up and folded the collar.

Luo Chuan glanced back at Chang Yeye, who was following him, and found that Chang Yeye's little face had been flushed by the cold wind, and he couldn't help frowning.

"Why are you wearing so little? It's winter. ”

"Hmmm......"

Luo Chuan sighed, if she was allowed to freeze like this, she would have to catch a cold tomorrow morning, so he took off his coat and draped it on Chang Yeye's shoulders.

"I ...... I don't need it, you put it on quickly...... It's going to catch a cold. Chang Ye Ye said tremblingly.

"Either you wear it and follow me, or you don't wear it, go home and choose for yourself. ”

Chang Yeye's heart was warm, and he didn't shirk it, and hurriedly put the coat that Luo Chuan draped on his shoulders on his body, and after putting it on, he felt a warmth coming, and the wind blew on his body and it was not so cold.

Chang Yeye looked at Luo Chuan, who was only wearing a sweatshirt in front of him, leaning over to track, with a complex emotion in his eyes, and at this moment, Luo Chuan stopped.

"Hmm, what's wrong?" Chang Yeye hurriedly ran to Luo Chuan's side and asked.

"Footprints...... Not at all. Luo Chuan said in a deep voice.

Chang Yeye glanced at the position pointed by Luo Chuan, and found that the footprints that had been connected suddenly disappeared, Chang Yeye did not believe in evil, and continued to walk forward more than a dozen steps, but still did not find the existence of footprints.

"Then what should I do now?" Chang Yeye asked as he walked back to Luo Chuan with a sad face.

"I ...... Try again. Luo Chuan shuddered, but the expression on his face did not change, and then pulled Chang Ye behind him, and began to circle from the place where the footprints were interrupted.

Chang Yeye stood motionless and looked at Luo Chuan's abnormal behavior, feeling very puzzled, but he also held back his curiosity and didn't ask questions, after putting on Luo Chuan's coat, it was obviously much warmer, this warmth was not only the warmth of temperature, but also the warmth from the heart.

And Luo Chuan was still circling around the place where the footprints were interrupted, but the scope of this circle was getting bigger and bigger, and it had gradually spread nearly ten meters away.

This is what Luo Chuan was told by a police veteran who came to his house as a guest when he was a child, when a person's footprints suddenly disappeared while walking, then there are many possibilities.

It is possible that he used some method to get his feet off the ground in the place where the footprints disappeared, such as getting into a car, climbing over a wall, etc.

It is also possible that the weather may be due to heavy rain, strong winds, or even water droplets condensed from the fog in the early morning.

Luo Chuan naturally didn't know what caused the disappearance of the footprints at this time, but it didn't matter how he disappeared, as long as he could find the broken footprints and let the clues connect again.

At that time, Luo Chuan said the same thing when he was young, the police veteran smiled, looked at Xiao Luo Chuan and said.

"Do you know how to find the broken footprints? If you don't know the method, then no matter how many theories you know, it's in vain. ”

Xiao Luochuan thought thoughtfully, then shook his head, the old-timer patted Xiao Luochuan on the shoulder with a smile, and then said unhurriedly.

"There are many reasons why the footprints suddenly disappear, but the direction in which a person walks is only the 360 degrees that surrounds him. ”

"As long as he can be sure that he is moving, it will be simple, because he can neither fly nor escape, and then he must move in a certain direction, which may be north, or south, northwest, or southeast. ”

"So, around the last footprint, search in a circle, which is the trapping method that our police often use when tracking. ”

"Based on the footprints of the perpetrator at the scene, when the pursuit is interrupted after a certain distance, make a clear mark at the tracking place, and use this as a starting point to use radial, grid, roundabout, spiral and other circle tracking methods to find the trace, and continue to track. ”

......

After putting away the picture of his memories, the corners of Luo Chuan's mouth raised a slight smile, because the circle method he used had found the traces of the disappeared footprints.

Luo Chuan straightened up and looked at Chang Yeye, because Chang Yeye had always been in place, Luo Chuan roughly estimated the direction and distance, and concluded that the distance between the two sets of footprints was about 14 meters, and the direction was the same as that of the original footprints, both extending in the northwest direction.

"Ye Ye. ”

"What's wrong? ”

"I've found the footprints, come here. ”

"Okay, I'll do it. ”

Chang Yeye doesn't know what's wrong, she's been very excited since just now, and she doesn't know if it's because the current scene is very similar to the scene of the police and bandit chase in the police movie, or because of the warm coat that Luo Chuan put on for her.

Chang Yeye ran towards Luo Chuan, pounced on Luo Chuan without slowing down, and crashed into his arms.

Luo Chuan was stunned, and his hand floating in the air didn't know where to put it for a while.

"Uh...... What's wrong?" Luo Chuan asked with some embarrassment.

"Nothing. Chang Yeye let go of his hand, and naughtily stuck out his tongue at Luo Chuan and said.

Luo Chuan breathed a sigh of relief, he thought something had happened, but what he never expected was that Chang Yeye had already fallen in love with him, an innocent big boy with an IQ and an expression quotient of zero.

"Let's go, we have to keep chasing, I don't know how far we have to go. Luo Chuan looked at Chang Yeye and said.

"It doesn't matter, you can go as far as you want, I'm not tired. Chang Yeye smiled sweetly.

"Well, are you still cold?"

"It's not cold, but you're only wearing a sweatshirt......"

"I'm fine, I was specially trained when I was a child, and I still have basic cold resistance. ”

"Ah? Why do you have this kind of training? And what does your family do? Let you train this kind of thing, and you are so smart and handsome, is your family some kind of national spy organization specializing in foreign countries? Or is it some central intelligence department or something? You ......?"