Yang Shitian adjusted his posture and looked very attentive, Mu Heng stopped kneading, stood up and walked to the water dispenser, and took the Pu'er tea on the top of the water dispenser bucket.

"The main function of saliva is to protect the oral cavity and clean the oral cavity, and it can also wash away harmful substances that enter the oral cavity. ”

Mu Heng made tea, carried a cup in his hand, and put the other cup in front of Yang Shitian, turned to the sofa and sat down, Yang Shitian lifted it and blew it, and did not ask.

"But the proportion of water in those toxins is less than half of that of a normal person. Mu Heng took a sip of tea.

"Is the identification accurate?" Yang Shitian asked, and without waiting for Mu Heng to answer, he said, "After all, those toxins are in the little girl's body, whether they will be mixed with the little girl's own water, that's not sure!"

"I've also thought about what you said!" Mu Heng put down the teacup and leaned on the sofa to pinch the Yintang acupoint, "But that toxin will not spread, nor will it fuse with other cells or water, just like an independent body, so the identification should be accurate." ”

Yang Shitian didn't interject, and lowered his head while drinking tea!

Mu Heng continued, "The toxin contains a small amount of alkaline, and there is very little water, so the toxin density is relatively concentrated, and it also contains H2SO4 in addition to alkali!"

"What is H2SO4?" Yang Shitian asked, Mu Heng opened his eyes and asked, "You haven't studied chemistry?"

Yang Shitian was a little helpless, and waved his hand, "I forgot it a long time ago!"

Mu Heng sat up straight with a blow in his nostrils, raised his teacup and took a sip, "To put it simply, it's sulfuric acid!"

"Sulfuric acid?" Yang Shitian looked incredulous, Mu Heng put down the teacup, "Yes, but I'm curious why sulfuric acid doesn't corrode the body!"

"What kind of animal has sulfuric acid in its mouth?" Yang Shitian asked, Mu Heng frowned and shook his head, "This is the second point I can't figure out the most, but I can't rule it out!"

"Why can't it be ruled out?" Yang Shitian asked again, Mu Heng leaned back against the sofa again and closed his eyes, "Young people should be careful in their work!"

Yang Shitian was a little stunned, and after a while, he picked up the file bag with the photo on the desktop again, and took out the third photo to look at, but he still couldn't stop wanting to vomit, Yang Shitian had carefully observed the chest part, so he looked to the side, and sure enough, it was found that it was not only the skin and flesh tissue at the edge of the wound that was destroyed by the toxin, but also the right chest of the little girl, and there were several blood holes on the surface of the white and tender skin, which were black, as if they were corroded by something and caused by the dent, just like the imprint left by the spark submerged in the foam, and the little girl's right hand was pinched and bruised, and the five nail marks were round and deeply concave into the flesh, and the eyes were not human nail prints, but it is clear that the bruised area of the skin, showing a person's palm.

Knock knock!

"Director, Officer Wang, who was transferred from above to assist us in solving the case, has arrived, do you have time now?"

Yang Shitian just wanted to ask, but was interrupted by Qiao Lin's knocking and talking, Mu Heng stood up when he heard this, and forced his spirit to tidy up his police uniform, "Let her in!"

Yang Shitian didn't get up, but put the photo back into the bag, thinking about something with his fingers interlocked, and at this time, Qiao Lin outside the door was smiling and making a gesture of invitation to a wavy girl.

"Please, Officer Wang!"

The girl looks at twenty-four or five, on her delicate and refined face, three points of charm and seven points of arrogance, natural ruddy red lips, tall and plump figure, and she has to be one meter eight or nine, a high-waisted denim top, a pair of small-foot jeans, and a noble temperament.

The girl tapped her delicate little chin lightly, thanked her and pushed the door in, leaving only Qiao Lin, who was still a little intoxicated.

Mu Heng saw the girl walk in, his face was tired, and he forced out a smile, "Hehe, if the man is here, come and take a seat!" Mu Heng gave up his position.

"No need Director Mu, I'll just sit here!"

Wang Ruonan ignored Yang Shitian and sat directly next to him, Yang Shitian felt a little crowded, so he moved to the left, Ruonan seemed to be a heart, so he also squeezed inside, Yang Shitian frowned a little, more because he didn't understand.

"Director Mu, if it's okay, I'll go back first, and I'll be contacted by phone!" Yang Shitian stood up and said, and then saw that Wang Ruonan didn't mean to let in at all, so he patiently asked, "Miss Wang, please let me go!"

Wang Ruonan didn't care at all, Yang Shitian was a little confused, this other person was love at first sight, why did this Wang Ruonan raise the bar as soon as he saw him, and he had no choice but to bypass the coffee table.

Seeing this, Mu Heng felt a little confused about these young people for a while, but he still had something to say, "Shitian, you will leave later!"

Yang Shi leaned in front of De Mu Heng, and asked with a face and did not speak.

"Ruonan is the special forces I sent to assist in the investigation at my request!" Mu Heng said.

Yang Shi asked, "What does this matter to me?" Mu Heng laughed twice with his hands behind his back, "In the future, you two will be partners until you help the police solve the case!"

"I don't need help!" Yang Shitian said, his tone a little impatient.

Wang Ruonan listened, raised his eyebrows, hugged his chest with both hands, and crossed Erlang's legs, "It's a partner, not to assist you, just don't hold me back when the time comes, and help you." ”

Yang Shitian didn't answer, he didn't want to be confused and provoke this tigress "I'm leaving!"

Mu Heng saw that Yang Shitian was leaving, and hurriedly said, "Shitian, have you thought about the coach?"

Yang Shitian stepped and turned his back to Mu Heng, "Didn't you say it last time?"

"I called Wanyi!" Mu Heng said again, Yang Shitian was silent for a moment, "I'll talk about it tomorrow!"

Mu Heng didn't say anything to stop him, he knew in his heart that Yang Shitian had a spleen, as long as Yang Shitian was relieved and didn't shirk, he basically agreed.

Yang Shitian walked out of the Public Security Bureau, still took a taxi, but did not fall asleep on the way, to the open space in front of the community sentry box, it was more than twelve o'clock, a little hungry, since the original restaurant had eaten, then returned home, comfortably took a bath, made a gesture to go to bed to take a nap, but just climbed into bed, the mobile phone rang, Yang Shitian was a little puzzled, it would not ring in the morning.

"Hey, James, what's the matter?" Yang Shitian said while lying on the bed, and there was a hearty laugh from James on the other end of the phone, and he heard that Michelle was also there.

"Oh... I heard that the Chinese are very trustworthy, and they are also very affectionate!"

Yang Shitian smiled awkwardly, "I was a little busy today, so I didn't call you back in time!"

James laughed dryly, "Dump! You should be done by now, right?"

Yang Shi sat up straight, "Yes, I'm at home now." ”

"Hahaha, that's good, how about a couple of drinks at my bar, I'll pick you up!" James laughed.

Yang Shitian was a little hard to refuse for a while, he really didn't want to go, but he still smiled and agreed, James hung up the phone happily, Yang Shitian clicked on WeChat, agreed to James's friend request, and sent the location to James, got up and put on his clothes and pants and leather shoes, walked to the living room and pulled a piece of paper, returned to the room and took out a photo of Wang Fengxia, lay on the bed and gently wiped it back and forth, his eyes gradually became trance, and slowly fell into memories.

In March of a certain year, the peach tree in Taoyuan Village bloomed, at that time, Yang Shitian and Wang Fengxia were chasing and playing under the peach tree, the breeze gently swept over the tree, blowing down a lot of peach blossoms, making the two of them full of heads, tired of playing Wang Fengxia will lean on Yang Shitian's chest, looking up at Yang Shitian with a smile on the corner of her mouth, the two always look at each other with affection, but the first to avoid the gaze is always Wang Fengxia, with a shy face, burying her head in Yang Shitian's arms, and rubbing it from time to time.

The corners of Yang Shi's mouth were slightly Yang Qi, and then his face was sad and returned to the cold normal, sighed and put the photo back under the pillow, and then left downstairs to think of the community for a walk, the sky was still gloomy, but there was no rain, the community was very quiet and there were no pedestrians, the villa area was lived by rich people, but it did not mean that rich people did not go to work, Yang Shitian was a little suspicious from the bottom of his heart, he was a little white face, he walked slowly around the garden with his hands in his pockets, and went to the sentry box to take a look, Ying Chuanming was still asleep.

Yang Shitian felt a little bored, so he walked out of the sentry box to the commissary and bought a pack of Double Happiness brand cigarettes, squatted on the side of the road and watched the vehicles coming and going, lit one by himself, and felt a little irritable and helpless, and he didn't know when Mu Heng's case could be solved, and when he could investigate his own affairs, but he helped people to the end, sent the Buddha to the west, and the promised thing still had to be done, but the little girl's death was too weird, and the toxin didn't know what was left, Yang Shitian didn't know what medicine was, and he hadn't seen the animal world since he was a child, so he basically couldn't think of anything at all。

"Little backcooper, sway... Remote... Yoo!"

Yang Shitian heard that the mobile phone rang and the ringtone was very earthy, passing by the two fashionable girls in front of Yang Shitian, he heard that he covered his mouth and walked by with a smile, and whispered while walking, and looked back with a smile from time to time, Yang Shitian was very helpless to take out the phone, it was James who called.

"Hey James, have you arrived?" Yang Shitian stood up on the phone and looked around.

"Oh, damn it, my broken car won't catch fire!" James said.

Yang Shitian laughed dryly, "It's okay James, when you have time to come over, I'll invite you!"

"Oh shit, bang, bang, broken car. James should be kicking the car, taking a moment of breath and saying, "Okay, then I'll hang up first, I have to call the 4S store to come and have a look." ”

Yang Shitian agreed, James hung up the phone, put the mobile phone in his trouser pocket and walked to the community, walked into the room when he arrived at the villa, continued to undress and prepare for sleep, just stripped off his shirt, the phone rang again, this time it was Scar calling, Yang Shitian was about to speak, but Scar took the first step.

"Big brother, it's not good!"

Yang Shitian frowned a little: "The bank card has dropped?"

Scar hurriedly denied, "No, no, this old woman's house in Nima, there is a big column of water, and there are a lot of toads and toads!"

"Did you dig into the underground river?"

Yang Shitian asked, and Scar hurriedly replied, "Shit's underground river, we just chiseled a hole in the floor, big brother, come and take a look!"

Yang Shitian agreed to Scar and hung up the phone, a little impatient to get dressed, hurriedly ran downstairs, trotted all the way to the outside of the sentry box, took a taxi to the old woman's house, all the way to the destination, Yang Shitian got out of the car and paid the money and ran into the alley, a moment to the old woman's house in front of the alley, the house was demolished but the water column was not seen, Scar and others were squatting around a clearing, all shirtless, covered with mud, Yang Shitian moved forward and walked behind the four people, several people were fascinated by it, and did not find it.

"Shhhh Why don't you take it anymore?" Scar scratched his head with one hand, and Erlen'er also looked puzzled, staring at the hole in the ground without squinting, "Scar, you reach in and dig it out, maybe there is a fish!"

"Fuck you, why don't you dig it!" Scar scolded.

"Oops... Don't make any noise, as if something is screaming inside. Zhang Zhi lowered his body and listened with his ears sideways.

"Can... What could there be, Zhang... Zhang Zhi, don't scare everyone. He stammered.

"Lao Tzu lied that you were raised by dogs!" Zhang Zhi said again, Scar saw that Zhang Zhi didn't look like a liar, and his curiosity was a little strong, so he leaned down and stretched his ears to the hole, frowning and listening, the hole was blocked by Scar's head, and he could only look at Scar's head for a while.

Several people held their breath, hearing a toad screaming in their ears, this time it was louder, and everyone could hear it clearly, and then Scar screamed, jumped up and kept slapping his ears, and several people ran away in fright for a while.

"Ouch, oh, ouch... Toad, it's a toad, help me rip it off, hurry up!"

At first glance, a few people saw that there was an extra toad on the scar's ear, and Erlen'er took off his shoes when he saw this, "Dig a groove, the toad wants to eat pig ear meat!"

Erleng moved up and strode forward, pulling Scar's hair, pressing Scar's body down, his ears were tilted upward, a big toad was biting Scar's ear and not letting go, Scar Ouch Ouch screamed, and the toad did not let go.

"Scar I... I'm going to fight!" Erlen'er raised the yellow rubber shoes, and Scar nodded hurriedly, "Hit it... Fuck it, hammer it to death!"

"That's what you said!" Erlen'er asked again, and Scar couldn't hold back the pain and yelled, "Do you fight?"

Beat!

Syllable... Yes... Syllable... Yes... Syllable... Yes!

Erlen'er three insoles, just beat the scar to learn to scream, but the toad is still not dead, the tongue is pulled to the mouth, the eyes are looking around, and the four legs are spread, but the body is bulging, twice as big as the original, the size of an adult's palm.

"You beat your mother, the toad can't be killed, why are you still beating the slot? Scar scolded.

Erleng'er's eyes were glazed, her eyes widened, and she pointed at the scarred ears with her yellow rubber shoes, "Toad Gong, Toad Gong!"

Scar was so anxious that he wanted to cry, but he didn't dare to pull it, what hurt was his grinning teeth, he turned his head and saw that Yang Shitian had arrived, so he hurriedly ran over, and grinned in front of Yang Shitian, telling Yang Shitian to think of a way quickly, seeing that half of Scar's face was stained red with blood, Yang Shitian was also very anxious.

Burst... Whoa...

Several people were in a panic, and suddenly a large column of water appeared from the hole, and it was almost one meter seven, Yang Shitian didn't say a word, pulled the scar head and walked over, dipped into the water column, and then pulled it out after a second, and the toad was gone.

Scar gasped for breath and wiped his face, "Dig a groove, it hurts... It hurts me to death, thank you, big brother. ”

Yang Shitian didn't answer, but grabbed the scar's hair with one hand, and looked at the water column that rushed up from the ground with a puzzled face, the strange place is obviously easy to see, the water column has no splash at all, and there is no feeling of water droplets splashing around, just like a crystal pillar, standing on the ground.

"Dig a slot, big brother... Look, you're canvassing, you're canvassing, you're canvassing, you're canvassing. Erlen'er yelled and pointed around.

Yang Shitian glanced around, and some thought of goosebumps, "Where did so many toads come from!"

"Big brother, they seem to be coming at the water column!"

Zhang Zhi observed more carefully, seeing that there were dense toads all around, a few people shuddered, so they ran to the side to watch, the toad did not drill into the water column as everyone thought, but three layers inside and three layers outside, surrounded by the water column in the middle, and there was a sense of awe, very regular sorting.