Song Yi slowed down his pace and walked around the room, his gaze carefully sweeping every corner.

What he has to do now is to conduct an on-site investigation of the assassination that happened last night, anyway, Song Yi occupies this body, which is equivalent to living in place of the original young Song Yi, and for Song Yi, if he has a spirit in the sky, he will definitely want to know who is going to kill him.

Song Yi's original profession was a profiler, popularly known as a behavior analyst, which is a combination of psychology professional background, and through the observation of crime scene layout and crime characteristics to analyze, so as to outline the criminal mentality, race, gender, age, professional background, appearance characteristics, personality characteristics and even predict his next move of the profession, the profiler will analyze all the characteristics of the combination, can help the police narrow the scope of the search.

In a sense, the profiling profession is an auxiliary profession derived from criminal investigation when it encounters a bottleneck, and it was only in the seventies of the twentieth century that this field began to develop in the United States, and Song Yi's own country did not appear as a profiling professional until half a century later.

It stands to reason that the collection of evidence at the crime scene should be the responsibility of criminal forensic professionals, in Song Yi's era, all high-tech instruments have been used to collect, from fingerprints to footprints, and traces of the crime, all details will not be let go, and for Song Yi, he does not have a high level of knowledge in collecting evidence at the scene, however, because he has been with Wang Hanyuan, the country's chief criminal forensic officer for several years, he has also learned some.

The trouble now is that Song Yi doesn't have high-tech equipment, so all he can use is his own naked eye observation and brain analysis.

The first thing Song Yi looked for was the way for the assassin to enter the house, and at present, Song Yi has determined several entrances, first the main entrance, and the other are the three windows facing out of the whole house.

Since there is no monitoring to retrieve, Song Yi naturally can't determine how many people come in and out from the main entrance, and there is only one maid who will come every day, that is, Qiao Yunlian, but Song Yi has already excluded her directly, in the brief conversation just now, Song Yi has roughly figured out what kind of person this girl is, even if there are camouflage elements, Song Yi has his own way to eliminate these ingredients.

Qiao Yunlian first didn't have the courage to do this kind of thing, and secondly, through the memory in his mind, Song Yi learned that in fact, maids and servants generally did not have the qualifications to cultivate, and the original young man Song Yi was a top cultivation genius in the Ming Number Hall, even if he was resting, he would not even notice the approach of a maid.

Therefore, the strength of the assassin is at least stronger than that of Song Yi.

There are also many kinds of assassins, mainly divided into professional and non-professional, and one of the reasons why Song Yi is now looking for the way this assassin entered the house is to judge his professionalism through various traces.

Because the marks at the main entrance were difficult to judge, there were too many people who could enter this room except for the maids, so he turned around directly to check the three windows.

The first window faces south, the farthest away from Song Yi's bed, but this window has a feature that allows you to see the bed directly from the outside, which is a good perspective if the assassin wants to determine whether Song Yi has rested.

However, Song Yi quickly ruled out this window, and through observation, he found that this window seemed to have not been opened for some reason, and a layer of dust had accumulated on it, and if someone had touched this window recently, then there must have been some traces on it.

It's just that, I don't know why, Song Yi has some kind of strange feeling about this window, and he can't tell what it is.

After excluding the first window, Song Yi came to the second window, which faced east, and when the sun rose every day, the sunlight could shine directly into the house, and from the distance from the bed, this window was the same as the last window.

And when Song Yi began to carefully observe this window, he immediately had an unexpected harvest.

"Hello... Assassins..."

Song Yi's eyes focused on the bottom of the window frame, which was made of bamboo, and Song Yi's discovery was a small piece of soil stained on the window frame, this piece of soil was very small, only the area of a fingernail, a thin layer, as if it was left when someone stepped on it, and the other party's body should be very light, maybe only the tip of the shoe fell on this window, leaving a little trace.

This further confirms Song Yi's idea just now, the assassin is a master, but judging from this trace, he is not a professional killer.

"This ground..."

Song Yi looked down along this window, he found that the ground was cleaner than he expected, if this assassin came in from here, he first had two possibilities, one was to hide in the house in advance, the other was to kill people directly when he came, and the second was more urgent, so it was the most direct to go forward from the ground along the window.

But there are no traces of mud on the ground, indicating that it is the first possibility, after determining this, Song Yi looked up at the roof beam, if the assassin wants to hide, the roof beam is a good choice, from the perspective above, you can first observe all the movements in the house, and secondly, it is also very conducive to a sudden attack.

"Gotta go up and have a look. Song Yi said, and began to think of a way to climb the roof beam.

"Hey, I forgot how it works. Song Yi suddenly remembered that most of the people in this world make a living from cultivation, like Yuan Song Yi, who began to quench his body and practice qi since he was a child, for him who has been cultivating for ten years, it is not too easy to climb a roof beam.

All you need to do is... Jump straight ahead.

Swish!

Song Yi's legs bent slightly, and then only used the explosion of muscle power, Song Yi only felt that his whole body was light, and then he was sent to the roof beam nearly five meters high by his own strength, although he was not used to this power for the time being, but Song Yi was also trained by the police force in his previous life, and he was a genius, so he learned quickly.

As soon as he arrived at the roof beams, Song Yi began to search, and as he expected, there were many more traces of dirt left here than at the window below, which directly proved that some 'unknown person' had been here yesterday.

Now, Song Yi has been roughly able to figure out the sequence of what happened late last night, first the 'unknown person' came in from the window to the east, when Yuan Song Yi was still training himself in the courtyard, and when he came back to rest after practice, the 'unknown person' should be very patient, he waited for Yuan Song Yi to rest, and then suddenly launched an attack from the roof beam, taking the life of the original young Song Yi in a way that was minimal and not bloody.

However, knowing that the assassin's process of action was only the beginning for Song Yi, his purpose was to lock the suspect, so he also needed more traces of the scene to help him deduce, for this reason, Song Yi did not go down directly, but walked carefully on the roof beams, trying not to destroy the dirt traces that were about to dry up, he tried to find other traces left by the assassin.

And after searching for a few minutes, Song Yi made a new discovery, he found a small piece of damaged wood veneer somewhere on the roof beam, and there was a little blood stain on it, which may have been left by the assassin when he was accidentally scratched when he was hiding here, but in the face of this bloodstain, Song Yi almost wanted to cry without tears, if this kind of thing is in the earth world, it can be locked up if it is directly taken to the laboratory for testing, but here he has no laboratory equipment, that is to say, this blood stain is the same as nothing.

But Song Yi hadn't given up yet, he looked at the dirt marks on the roof beams, and his intuition told him that the 'unknown person' had been hiding here for at least an hour.

And just as Song Yi was carefully looking for traces of the scene, a call came from outside the house.

"Xiaoyi!"

The voice came, so that Song Yi came back to his senses from the clues at the search scene, he looked down, only to see a girl with a delicate figure and a three-foot long sword on her back had already walked in.

The girl was dressed in light blue clothes, a long skirt was only a few inches off the ground, although it was a top-down perspective and could not see the girl's appearance clearly, but Song Yi could see that this girl's body was wonderful, with fair skin, and the demeanor of a family lady, in addition, the green silk and waist on her head exuded youthful vitality, compared to the previous Qiao Yunlian, it would only be better, and finally, it was also good for Song Yi to be in a high place, he could see the girl's pair of plump breasts directly from the perspective above.

It's very well developed.

"Huh, Xiaoyi, where are you, aren't you in the house?" After the girl in the blue dress carrying the long sword entered the house, she found that Song Yi was not there, she was puzzled for a moment, and then she turned around and prepared to look around the house, and at this moment, Song Yi above shouted:

"I'm here. ”

Hearing Song Yi's voice, the girl in the blue dress was about to step out of the house, she looked up at the roof beam above, and was stunned.

The girl looked up, Song Yi finally saw this clean and elegant face clearly, and through the memory in his mind, Song Yi knew that this girl had an unusual identity.

She is her sister who is two years older than Song Yi, Song Yuqing.

"What are you doing up there?" Song Yuqing looked at Song Yi above with a puzzled expression, blinked her beautiful eyes, and asked.

"No, I just wanted to see who the person who was going to kill me was. Song Yi said, and jumped off the roof beam, this kind of power that can easily fly the eaves and walk the wall is really amazing to him, on the earth, how to jump from a height of five meters will have a small fracture.

"The person who wants to kill you is up there?" Hearing this, Song Yuqing immediately became vigilant, her beautiful eyes stared, and she carefully swept every corner on the roof beams.

"Don't look at it, I mean the person who wanted to assassinate me, who hid on it last night and suddenly attacked. Song Yi clapped his hands and said.

Hearing what Song Yi said, Song Yuqing breathed a sigh of relief: "Are you okay? I heard about you, so I rushed over from Bafang Garden." ”

"It's no big deal, don't worry, sister, I'm fine. Song Yi said lightly, and his words made the latter stunned.

"You just... Call me sister?" Song Yuqing seemed to be a little unbelievable, since the fire in the library four years ago, Song Yi has changed, has become very indifferent, often immersed in cultivation alone, Song Yuqing knows that the death of her mother has hit everyone hard, including herself, but in the past four years, this family is like missing a piece of the puzzle, everything is no longer what it used to be, Song Yi is cold even to her own sister, and there is little communication.

And now, after four years, Song Yuqing heard Song Yi call her sister again.