Contrary to the noise of the day, the hospital is quiet at night.

The hallway was empty, filled with the smell of disinfectant water.

Luoluo came to the monitoring room with the thermos box, and saw the young master sitting alone on a chair, elbows on his knees, looking at the ground in a daze.

The pale light shone on him, revealing the coldness.

"Young master, it's time to eat!" Luo Luo walked over quickly.

Yu Xuan glanced at her and sat up straight.

"This is Uncle Wang's!"

Luoluo handed one of the lunch boxes to Wang Meng, who was standing next to him, and he reached out to take it and thanked him.

The other is naturally Yuxuan, the lunch box is opened, the aroma is overflowing, and the food is placed on the chair.

Yu Xuan was not very hungry, so he picked up the chopsticks and ate two bites, then put them down.

"Young master, eat more, I didn't eat at noon!"

"I'm not going to eat the rice, I'm going to finish the soup!"

"Okay!"

After eating, Luoluo cleaned up the dishes and chopsticks, and persuaded: "Young master, wait for you to go to the lounge next to you to rest, I will stay here at night!"

"It's fine!"

While the two were talking, Yulang walked over.

He looked like he had just gotten off work, and he was still carrying a briefcase in his hand, looking tired and hurrying.

"I'll come here for you!" he said.

Sitting on the chair, when he saw the food next to him, he didn't like Yu Xuan to eat it, so he picked up the chopsticks and devoured it.

Yu Xuan looked at him quietly.

Yulang had a busy day in the company today, and he didn't have time to eat, but he poured a stomach full of water.

Picking up the dishes with chopsticks, he asked vaguely, "What's wrong?"

"It's fine!"

Yu Xuan looked away and asked Luo Luo to buy a bottle of water from the vending machine in front of him.

After Yulang finished eating, Yuxuan asked him, "Are you alone?"

"Wait a minute, my dad will come too, and the two of us will take turns keeping vigil!"

"Alright, call me if there's something!"

Yu Xuan left the hospital and looked at the time, it was already nine o'clock in the evening.

Sitting in the car, he said to Wang Meng: "Uncle Wang, go to Taisheng Pharmaceutical!"

Wang Meng agreed, and the car turned a corner and drove out of the hospital quickly.

---

A suburb of Tokai City.

It's a huge factory, and it's now off-hours, but it's still brightly lit inside.

Taisheng Pharmaceutical is the largest pharmaceutical company in Donghai City, and has extremely advanced chemical testing equipment, which can accurately identify the composition of articles.

When Yu Xuan arrived, it was busy, collecting hundreds of samples from the old house, and the employees of Taisheng Pharma were doing emergency tests.

"Young Master!"

Liu Yong had been waiting here for a long time, and when he saw him, he bowed slightly.

Yu Xuan nodded, pulled over a chair and sat down, facing the testing laboratory, waiting quietly.

The wait is one night.

It wasn't until the next morning, when Luoluo went out to buy breakfast and came back, that the test results came out.

The person in charge of Taisheng Pharmaceutical walked quickly, holding the inspection sheet in his hand: "Mr. Shang, it's been found out!"

"Say!" Yu Xuan stood up.

"We detected cyanoacetone in a pill packet, a highly toxic chemical that is colorless and odorless, and only needs 0.02g to kill people!"

"Medicine?"

"This is it!"

The person in charge took out a package of traditional Chinese medicine wrapped in yellow paper, which contained various medicinal materials.

"This ...... This can't be!" Liu Yong looked stunned.

Yu Xuan looked at him, and Liu Yong hurriedly said: "Young master, the old man is old, and he occasionally has an imbalance in the spleen and stomach, so he asked the doctor to prepare a pair of warm and tonic Chinese medicine to regulate the body." I personally went to the pharmacy to grab this medicine, and after bringing it back to the old house, it has been locked in the medicine cabinet, how can it be poisonous?"

He has been a housekeeper in the Shang family for decades, and he has always been cautious, and he has handled all the eating, drinking and medicine related to Shang Chengjun, and he has never made a mistake!

Yu Xuan furrowed his brow.

The person in charge said at this time: "Mr. Shang, the medicinal materials do not contain cyanoacetone, we found it on the yellow paper wrapped in the medicinal materials!"

"What do you mean?"

"Someone made hands and feet on the paper, they put cyanoacetone into a potion and smeared it on the paper, when wrapping the herbs, the paper will inevitably have creases, and a little powder will be integrated into the herbs, because the quantity is relatively small, it is okay to take it once or twice, but if it accumulates over time, it will inevitably cause great damage to the body!"