William was busy looking at medical records when Zhang Ting offered him her hand. He instinctively stopped her, saying, "Didn't I tell you I'm a germaphobe and don't like using other people's things?"

Tang Yaoyao handed a pack of tissues to William: "They're untouched, you can use them."

William glanced at it, then put a pack of tissues in his pocket: "Um, thanks."

Zhang Ting was startled when she saw William's habitual action: "William, I'm your assistant, I have to take care of you, wouldn't that make me seem useless?"

“You can go down,” William said.

He immediately shut Zhang Ting up.

Tang Yaoyao propped herself up on her arm, turned her head to look at William, and asked, "I didn't expect you to be an expert at such a young age."

William patiently replied, "I learned medicine from my master since I was a child, which is why I am where I am today."

"That's because you're talented," Tang Yaoyao said with a smile. "They all thought the expert was an old man in his fifties or sixties. They were all surprised to see that he was so young and handsome. I even heard a few nurses discussing how good-looking the expert was."

William smiled. "Really? Do you think I'm good-looking?"

He turned his head and looked at Tang Yaoyao seriously. Tang Yaoyao was stunned for a moment. His words made it sound like he was saying that being good-looking was more important. But she said firmly, "Of course you're good-looking. I've never seen a doctor who is so good-looking and has such a great figure. You're the epitome of gentle and refined."

“Yaoyao is also very beautiful. I never knew you had this talent. I am very proud of you.”

"Proud?" Tang Yaoyao was surprised. Could it be that William knew her?

"Hmm." William's lips curled up, a hint of indulgent smile in his deep eyes. "I've been following you for a long time, since your very first film, even though I'm abroad. In fan circles, I'd say I'm your fan?"

Tang Yaoyao covered her mouth in surprise, not expecting that such a cold person was her fan. She felt very honored: "That's been quite a while. I didn't expect that Mr. William was my fan. Meeting him today is quite a coincidence."

"I guess it's fate," William said. "We'll probably meet more often in the future."

They quickly warmed up to each other after a few words.

Zhang Ting, who was watching from the side, was so angry that her mouth twisted in disbelief. When had William ever smiled at her like that?

The entire street was blocked off. When they went inside, they felt desolate and sad, just like in Resident Evil, which caused great panic among the people.

They were all wearing protective masks, just in case, and checked each shop.

Some experienced abdominal pain while eating, others while working; in short, various strange situations arose.

They took the food with them and went to various places to investigate.

“William, there seems to be something else in this food,” the doctor said after testing. “We’ve never seen anything like it before.”

"Food poisoning?" William was skeptical.

"They must have been poisoned by eating these things."

William said, "It's just them, it can't just be food. He thinks there's something else going on, so he's going to check the drinking water."

"The water dispenser is working normally."

“Take more and see which items contain unknown substances,” William said.

“Yes, Mr. William.”

They took samples from every shop and every floor to detect the substance and find out where the illness came from.

That's no different from the police investigating a murder case.

A busy day can easily slip away.

Everyone was exhausted.

Tang Yaoyao could tell that William liked sweets. He had some candy in his pocket, and when the message came, he tore open the wrapper and put it in his mouth.

Then he took out another one and tore open the wrapper.

Zhang Ting saw it and felt a surge of joy. She called out, "William, is this candy for me?"

William glanced at Zhang Ting with a rather indifferent expression, then looked at Tang Yaoyao beside him and said, "This candy is for Yaoyao."

He brought it to Tang Yaoyao's lips, and Tang Yaoyao looked up at him. He smiled indulgently at her: "You haven't eaten all afternoon, so you need to replenish your sugar levels."

Tang Yaoyao opened her mouth and ate it: "Thank you."

"You're welcome."

Zhang Ting was extremely embarrassed, wondering why Tang Yaoyao always got a share: "Mr. William, could you prepare one for me next time?"

William didn't say anything and went back to his work.

Tang Yaoyao had a general understanding of where the toxic substances came from.

Food, coffee cups, bread—mainly anything related to eating—this poison enters through the mouth.

The origin of that information is still unknown.

If it's not in the water dispenser, it's very likely from an underground water source.

Tang Yaoyao said, "Let's go and extract underground water."

Zhang Ting scoffed, "Why do we still need to work on this? We've already found out that the poison all came from food. Someone must have poisoned the food in every household. Just check the surveillance footage and see who could be responsible!"

Tang Yaoyao retorted, "Every household? Appearing in the food all the time? Who would have the energy to do such a thing? Don't you think about the limits of human beings? I investigated the water resources because the bread and food here need tap water before they are finished, and it is very likely that they will be spread through tap water."

"The water source on this street is polluted, which caused this situation. Don't they understand the importance of investigating the water resources?"

“You think the same way I do,” William said. “Go investigate.”

Zhang Ting immediately shut her mouth, only able to sulk in silence, for she hadn't thought of that part.

Tang Yaoyao arrived at Fu Xiuchen's company. Everything here was the same, and the door was unlocked for easy investigation. The furnishings inside, and her favorite milk tea in the office, made Tang Yaoyao feel a pang of sadness when she thought of Fu Xiuchen's doting on her.

I wonder how Fu Xiuchen is doing.

She didn't even have time to call her family.

No one said where Fu Xiuchen went.

Seeing Tang Yaoyao standing motionless in the office, William asked, "Are you worried about your older brother?"

Tang Yaoyao turned around: "Yes, how did you know?"

William laughed and said, "I know so much about your situation, of course I know that Fu Xiuchen is your older brother. Don't worry too much, he's lucky and won't get into any trouble."

Tang Yaoyao said, "Thank you for your kind words. I haven't seen him, and I heard that he was also poisoned. I'm worried."

William instinctively patted her head: "Trust me, you'll understand soon enough."

"Mmm." Tang Yaoyao believed him, of course.

"William, William, there's definitely something wrong with this water source. It's full of this substance, a lot of it!" the doctor said. "And I discovered that this water source is isolated from the other rivers, and it's at the source, only flowing downstream, so only this part is problematic!"

Just as Tang Yaoyao had thought.

"Who would be so bold as to poison people and take revenge on society? More than 300 people were harmed at once." Zhang Ting found it unbelievable.

The water source is near Fu Xiuchen's company, and many people in the company have been poisoned, including Fu Xiuchen. I wonder if it was because of her older brother.

She wasn't sure, but she had to be careful.