Yun Mo got in the car and looked at Zeng Fang, who was sitting in the back seat with her, with some surprise, "Fang Fang, why are you here?"

Zeng Fang chuckled and said, "Of course I miss you."

Yun Mo didn't believe a word of this, "You just want to watch the fun, maybe."

"Oh, you see it but don't say it."

As she spoke, Zeng Fang sniffed, "Why do I smell steamed buns? Momo, are these the steamed buns you had this morning?"

"Well, sauerkraut buns, didn't you have breakfast?"

Zeng Fang nodded pitifully, "Breakfast wasn't ready at home when I left, so I only ate two small pieces of bread the size of eggs."

As soon as he finished speaking, Yao Cheng in the front row mercilessly complained, "How dare you say that? You had two loaves of bread and you didn't share one with me. I really loved you in vain."

Zeng Fang said confidently, "It's okay for you grown men to go hungry for a meal or two. I'm a girl, and I'm still growing."

"If you grow any bigger you'll become a fat pig."

Zeng Fang hated being told she was fat. She was so angry that her eyes widened. "How am I fat? What are you looking at me like that?"

"I have very good eyesight and can see your double chin clearly."

"you……"

Yun Mo interrupted the two of them, not knowing whether to laugh or cry, "Fang Fang, Brother Yao, I brought breakfast, do you want to eat some?"

When Zeng Fang heard that Yun Mo brought breakfast, she immediately stopped arguing with Yao Cheng.

"What did you bring for breakfast?"

"Sour cabbage dumplings and vegetable porridge."

Zeng Fang was so surprised that she almost jumped up. "Sour cabbage buns! One of my favorites. Momo, hurry up! My mouth is watering."

Yun Mo took out the lunch box with amusement.

Yunmo specially customized a thermal cover for the outer layer of the lunch box. The interlayer of the thermal cover is made of high-quality thermal insulation cotton, and the warming effect is quite good.

When I opened the lunch box, the buns were still hot, and the unique fermented smell of the buns filled the entire carriage.

Even Yao Cheng couldn't help but reach back, "Fangfang, give me two buns."

"No."

Zeng Fang patted his palm lightly, then reluctantly handed two buns to him.

Probably because he was extremely hungry, Yao Cheng finished a bun in just a few bites, praising it as he ate, "Hmm, the bun tastes really good, Yun Mo, did you make it yourself?"

“My husband did it.”

Yao Cheng looked at her through the rearview mirror with some surprise, then smiled and said, "I didn't expect your husband to have this skill."

"You haven't thought of many things. Brother Ling not only makes delicious buns and pancakes, but also cooks delicious dishes. He is also handsome and devoted to Momo. He is good at both being a lady in the living room and a cook in the kitchen. You are not like me, you are lazy and don't know the difference between grains. You deserve it that you can't even find a girlfriend at your age."

"Fang Fang, what did I do to you? Every word you said hits me right in the heart."

Zeng Fang snorted and rolled her eyes at him, "You know it clearly in your heart!"

"I don't know. Tell me, how did I offend you?"

"I'm too lazy to say it."

Yun Mo didn't expect to "sacrifice" the breakfast she brought for Jian Xun, and she was unable to stop the quarrel between the brother and sister. She was at a loss whether to laugh or cry for a moment.

"Don't finish all the buns. Leave two for Dr. Jian."

There happened to be two buns in the lunch box. Zeng Fang was about to take another one, but when she heard Yun Mo's words, she quickly withdrew her hand.

Yun Mo nodded, "Yes, I needed his help with something, and he came yesterday afternoon."

Zeng Fang turned to look at Yao Cheng who was driving in the front seat, "Cousin, are you here with Doctor Jian?"

Yao Cheng glanced at her through the rearview mirror and said with a half-smile, "What do you think?"

Zeng Fang bit her lip lightly, then narrowed her eyes and smiled, "I'm sorry, I misunderstood, I apologize to you."

Yao Cheng suddenly came to Jiang City without calling in advance. Zeng's family was naturally curious about the reason, but Yao Cheng refused to say it clearly and only said that he came here to do something.

Early this morning, Yao Cheng rushed out without even having breakfast, and even went to Zeng Fang to ask for Yun Mo's address. This made Zeng Fang have to imagine a lot, and she mistakenly thought that her cousin had some feelings for his good friend Yun Mo.

So in the car, in order to make her cousin give up the idea, Zeng Fang deliberately praised Ling Chuan and took the opportunity to belittle Yao Cheng.

Now that she knew that Yao Cheng came to Jiang City with Jian Xun and not for Yun Mo, Zeng Fang realized that she had misunderstood.

Yun Mo vaguely guessed something, so she briefly explained the reason why she asked Jian Xun for help.

Zeng Fang suddenly perked up when she heard that Yun Huan’s death might be related to Yun Yao.

"She can't be so cruel, Yun Huan is her biological sister..."

"We'll know when we see the test results. I hope I'm overthinking it."

"Then let's go quickly, cousin, drive faster."

"This is already the fastest, okay? If it goes any faster, we'll just have to grow wings and fly over."

Yun Mo reminded, "There's no need to rush for these few minutes. Safety is important."

When they arrived at the criminal police team, Yun Mo gave the lunch box to Yao Cheng to take into the cloud. She and Zeng Fang sat in the car and waited.

Yao Cheng walked to the door of the laboratory, just as Jian Xun came out.

"Any results?"

Jian Xun nodded, his face showing fatigue. There were tiny red bloodshot in his eyes behind the lenses, obviously he had been up all night.

Yao Cheng handed over the lunch box in his hand, "Then you should eat something first. Yun Mo brought some sauerkraut buns from home specially made by her husband. They taste pretty good."

The lunch box was quite big, and I thought it could hold a lot, but when I opened the lid, I saw only a bun the size of an egg inside.

Facing Jian Xun's suspicious eyes, Yao Cheng cleared his throat and said, "Well, my cousin is here too. She's quite greedy."

Jian Xun chuckled, "Before you say this, if you can pick out the pickled cabbage leaves stuck on your gums, I might believe it."

Yao Cheng: “…”

Although there was only one bun left, fortunately there was still half a box of vegetable porridge. I drank it in a hurry and managed to fill my stomach.

—

"The extracted body fluid samples were found to contain formic acid, which is dozens of times higher than the human body's tolerance. The human body can excrete trace amounts of formic acid through metabolism, but if there is excessive formic acid in the body and no measures are taken to decompose and treat it, it will cause metabolic acidosis, leading to various diseases, even cancer.

What we can confirm now is that the red spots and papules on Yun Huan's body were caused by formic acid poisoning. As for whether the leukemia was also caused by this, we need to conduct a further autopsy by the forensic doctor before we can draw a conclusion."

In the car, after hearing Jian Xun's words, Yun Mo and the other two couldn't help but look surprised.

"What about formic acid? How can it enter the body? Breathing, contact or eating?"

"Formic acid is highly irritating and corrosive. If it comes into direct contact, there will be a strong reaction. Relatively speaking, the toxicity of formaldehyde and formic acid is similar, but it is milder. Most importantly, formaldehyde will be metabolized into formic acid in the body. The poison in Yun Huan is likely to be formaldehyde. The benzene molecules contained in formaldehyde are also very likely to induce leukemia if inhaled or ingested excessively by the human body."

(End of this chapter)