After Mo Yanfei had eaten lunch, she sat down on the sofa, she wanted to think about how Jiang Mingxuan's free clinic worked, but she didn't think about it for ten minutes before she heard the doorbell.

Mo Yanfei got up and opened the door, and saw his cousin Chu Yunfei and a boy with glasses and a gentlemanly appearance standing outside the door.

Mo Yanfei said with a smile: "Oh, I said why did the magpie in the tree keep calling this morning, it turned out that there was a distinguished guest arriving." ”

Chu Yunfei looked Mo Yanfei up and down and asked, "Sister, you were lazy and didn't go to work today?" ”

Mo Yanfei glanced at Chu Yunfei and said dissatisfiedly: "How can you speak, isn't my sister sick!" ”

"Yo, this little face is flushed, and it looks better than me, what is the problem? I'll have one tomorrow too, so I'll skip class. Chu Yunfei said, leading his classmates into the door.

Chu Yunfei asked out of sight: "Sister, do you still have anything to eat?" Yin Lin and I haven't eaten yet. ”

Mother Wu heard the voice and walked out of her room: "The little master is here, what do you want to eat?" I'll do it. ”

Chu Yunfei said with a smile: "Mother Wu, anything is fine, I'm hungry." ”

Chu Yunfei came with his classmates, Mo Yan had to make enough face for his cousin, and hurriedly said: "Yunfei is rare to come back, sister has to invite you to have a good meal, let's go out to eat." ”

Chu Yunfei poured himself a glass of water: "Sister, I have something to do with you, let's eat the dinner later, just have a flatbread first." Yin Lin and I went straight to the train station as soon as we got out of class, and we didn't even drink our saliva. ”

Mo Yanfei poured water for Yin Lin and said, "Why are you getting more and more unruly, you don't pour water for your friends, but you drink it first." ”

Yin Lin smiled shyly: "Sister, it's okay, Yunfei and I are good friends." ”

Wu's mother said: "Since you are hungry, I will spread two poached eggs for the two of you first, and then go to the street corner to buy you a few big meatloaf, what do you think?" ”

Chu Yunfei said with a smile: "Mother Wu, you still love me, you know that I love meat." ”

"Mother Wu, you can also bring me two poached eggs." Mo Yanfei said with a smile.

"Okay~" Wu's mother said and walked into the kitchen.

Mo Yanfei looked at his cousin and asked, "Say, what's the big deal that can make you give up the big meal?" ”

Chu Yunfei raised his eyebrows: "Murder, this matter is big enough, right?" ”

Mo Yanfei nodded: "Well, it's big enough!" But you've got to tell my dad about such a big deal. ”

"Sister, I think you are more reliable than my uncle."

Mo Yanfei glanced at Chu Yunfei, "Yunfei, I watched you grow up, so we won't use this void." ”

Chu Yunfei moved his body to Mo Yanfei's side and said, "Sister, what I said is true. I just went to the police station, and when I saw that you weren't there, I didn't even go up to the second floor to see my uncle, so I went straight to Erdao Street and looked for you. The person I admire the most now is you, and I believe that only you can solve this problem of my classmates. ”

Mo Yanfei looked at his cousin: "Your classmate's?" ”

Chu Yunfei pointed at Yin Lin: "The lover of his dreams." ”

Mo Yan was confused, it turned out to be a major matter in the relationship between men and women, no wonder Yunfei didn't dare to tell her father. Although Chu Yunfei is already 20 years old, he is still studying, with his uncle Chu Jinpeng's principle of "starting a business first and then starting a family". Xiao Yunfei is still a long way away from the relationship between men and women.

Mo Yanfei looked at Yin Lin, and Yin Lin said with an embarrassed expression: "Sister, don't listen to Yunfei's nonsense, Yu Ling and I are ordinary classmates." ”

Mo Yanfei nodded: "Well, my brother has always been open-mouthed, don't mind." ”

Chu Yunfei didn't care about Mo Yanfei's evaluation of himself, he said to Yin Lin: "You and my sister will tell the truth, my sister can rest assured, the case of Bai Suping, the most popular flower girl in our Fengcheng back then, was strangled to death in the snow was solved by my sister." ”

Mo Yanfei coughed lightly: "Yunfei, it was all three years ago, don't mention it again." ”

Chu Yunfei Yile: "Then let's mention it two years ago?" ”

Mo Yanfei patted Chu Yunfei's arm: "Let's get down to business." ”

As soon as Yin Lin wanted to speak, Mother Wu walked out of the kitchen with a plate: "Little master, let's eat some poached eggs first." ”

"Hey." Chu Yunfei responded, got up and pulled Yin Lin, and walked quickly to the dining table.

"Yin Lin, coming here is the same as coming to my house, don't be restrained." Chu Yunfei said, handed Yin Lin a pair of chopsticks, took the chopsticks himself, picked up a poached egg and ate it.

Yin Lin turned back to Mo Yanfei and said, "Sister, do you want to use some together." ”

Mo Yanfei said with a smile: "I'll come by myself, you eat yours first." ”

Wu's mother said, "You eat slowly, I'll buy a big meatloaf." ”

Mo Yanfei waited for Wu's mother to leave, and said to Yin Lin: "If you have anything on your mind, just tell me." ”

Yin Lin put down his chopsticks: "Sister, that's the case, Ma Qianjing, a classmate in our class, was poisoned the day before yesterday." Yesterday, the police asked Yu Ling to investigate, although I knew that Yu Ling was innocent, but there was no way to prove it. I've heard Yunfei talk about it before, and you've solved all kinds of difficult cases. So I took the liberty to come to the door today, just to ask you to help investigate. ”

Mo Yanfei smiled faintly: "Yunfei is my cousin, who has followed me since he was a child, and he is often fooled by me. So he just said that he adored me, and that's true, because he had never been in contact with other masters. ”

Chu Yunfei glanced at Mo Yanfei: "Sister, don't be modest, help Yin Lin, he's dying." ”

Mo Yanfei said to Yin Lin: "You eat some poached eggs first, and then tell me what happened." ”

Yin Lin was in the mood to eat poached eggs, he took out a piece of paper from his pocket: "Last night, I already sorted out a few people related to Ma Qianjing, let me tell you from the beginning." ”

Mo Yanfei sighed in his heart: High-achieving students are really different! Everything is so methodical.

It turned out that Ma Qianjing and Yu Ling, as well as Chu Yunfei, were both sophomore classmates. The day before yesterday, Ma Qianjing suddenly had vomiting and abdominal pain, and after the teacher sent her to the hospital, after examination, the doctor diagnosed mercury poisoning, and the teacher immediately called the police.

When the police came to the school to learn about the situation, the first thing they checked was Ma Qianjing's bedroom. When an experienced policeman walked into Ma Qianjing's bedroom, he quickly felt a metallic smell in his mouth, and he immediately opened the window and beckoned his colleagues to leave the room.

After being tested by professionals, traces of mercury volatilization were found under Ma Qianjing's bed.

Ying Lan, who was in the same bedroom as Ma Qianjing, always felt dizzy, headache, and insomnia in the first two days, so the day before Ma Qianjing's accident, she asked the teacher for sick leave and went home to rest.

Yin Lin also felt that Ying Lan and Ma Qianjing's faces had been very bad these days, and they didn't sleep well at first glance.

Yin Lin was sure that there was someone who wanted to murder Ma Qianjing, but that person would definitely not be Yu Ling.