"Dr. Yan, it really is poisoning! Bromadiolone poisoning!"

At nearly 10:30 PM, the Yan siblings once again received a call from Yin Yue's phone number.

Hearing Yang Di's excited voice on the call confirming it was bromadiolone poisoning, realization dawned on Yan Feifan.

Bromadiolone is a common type of rat poison.

It works by competitively inhibiting the coenzyme function of vitamin K1, which ultimately obstructs the formation of thrombin.

At the same time, its metabolite, benzylideneacetone, can directly damage the body's capillary walls. This increases the permeability and fragility of the vessel walls, causing widespread rupture and bleeding of internal capillaries, which results in hematuria.

If the organ damage progresses further, it can lead to multiple organ failure and, in severe cases, even death.

Yang Di's voice continued from the phone, "Dr. Yan, you truly live up to your reputation. You're a miracle worker; you hit the nail right on the head."

"The doctors here started me on vitamin K1 supplements and gave me a blood transfusion to stop the bleeding. With these treatments, I'm already feeling much better."

"Once I've recovered, I'll be sure to visit and thank you in person..."

After the call ended, Yu Suye, who was standing beside him, said with a sigh, "It's a good thing he contacted you when he did, Feifan."

"Otherwise, his condition likely would have taken a sharp turn for the worse after a little while, entering the organ failure stage."

Yu Suye then reflected, "His attending physician clearly fell into the trap of making assumptions."

"He simply assumed there was a direct link between the patient's abdominal and lower back pain, hematuria, and the kidney stones and positive occult blood test, while ignoring other possibilities."

She then asked rhetorically, "So, does this mean that the comprehensive and excessive testing that patients complain about and loathe is actually necessary?"

Yan Feifan shot her a look and criticized, "Don't generalize from one special case. A doctor needs to use their own judgment to decide when to run targeted tests and when to do a full workup."

"In a situation like his..."

Yan Feifan commented, "When the initial abdominal pain and hematuria didn't improve with treatment focused on kidney stones as the primary cause, the attending physician should have broadened his thinking and considered other possibilities."

"Alright, alright, let's not discuss this right now..."

Yan Ziruo cut Yan Feifan off, asking with concern, "Feifan, what's the most likely cause of his poisoning?"

Yu Suye answered first, "Sis, bromadiolone is the main ingredient in a common type of rat poison."

"Eating pork or dog meat from an animal killed by it, or consuming contaminated vegetables, grains, or water could all cause poisoning."

"Of course, we can't rule out the possibility that he was intentionally poisoned."

Seeing the worried look on his sister's face, Yan Feifan comforted her, "Sis, don't worry yourself over nothing."

"If Yin Yue were the one who poisoned him, she wouldn't have actively contacted us."

Yan Ziruo said anxiously, "How do you know this isn't just a smokescreen? Maybe she just didn't expect you to be so brilliant."

"Forget it, forget it..."

Yan Ziruo said, a bit irritated, "We're on different paths now. Yin Yue and I aren't the same kind of people anymore. It's better if we just stop contacting each other."

"But this time, I'll be the one to block her."

Having made her decision, Yan Ziruo urged them, "It's getting late. Hurry up and go to bed..."

Yu Suye tiptoed back to the attic bedroom and was surprised to find her mother still awake, leaning against the headboard and looking at her phone.

She got into bed and leaned against the headboard next to her mother.

"Mom, when are you going back to Jingcheng?"

Su Ru put down her phone, reached out to pinch Yu Suye's nose, and asked half-jokingly, "Trying to rush your mom out? So you can move in with that guy?"

"Hey, Mom, what are you talking about?"

Yu Suye said shyly, "Feifan and I haven't reached that stage yet. Besides, even if we did, you wouldn't be able to stop us."

"We have plenty of opportunities to be together at the hospital."

The thought made Yu Suye recall the steamy, unforgettable dream she'd had at the hospital today. Her face immediately started to feel hot.

Embarrassed, she slid down in the bed and pulled the thin blanket over her face.

"Su Ye, you're an adult now, and a doctor besides. I won't nag you with a bunch of warnings."

Su Ru then asked, "Are you selling that apartment you bought?"

Yu Suye yanked the blanket off her face, sat up, and asked indignantly, "Mom, did Lu Yao tell you?"

Su Ru smiled. "He's just concerned about you."

"Su Ye, you just bought that place not long ago. Why are you suddenly selling it?"

"Are you short on money, or is that guy short on money?"

With a serious expression, Yu Suye explained, "Neither of us is short on money. Feifan and I decided to start a company with some friends."

"You're investing in a company?" Su Ru was very surprised. 𝐟𝕣𝗲𝕖𝕨𝗲𝐛𝗻𝗼𝐯𝗲𝚕.𝗰𝚘𝐦

Yu Suye said, a little smugly, "And why can't I invest in a company? Feifan came up with two great, very promising projects, and after we discussed it, we all decided to do it together."

She then added, "With my brother's talent, he could easily find a good project and start his own business. He doesn't need to fight and claw his way through the family enterprise."

Su Ru shot her a sideways glance. "You think starting a business is like playing house? It's not that easy to succeed."

"It took our Yu Family over a hundred years to get to where we are today."

Yu Suye said defiantly, "Then I'll just have to build it up and show you. Just don't get all jealous and ask me to hand it over to my brother then."

Su Ru chuckled lightly. "Your brother wouldn't even look twice at this little venture of yours. You can just keep it as your dowry."

"So, how much are you putting in?"

"How much are you all investing in total?"

Yu Suye explained, "I'm putting in six million, and Feifan and his sister are putting in seven million."

"That woman you met, Song Yi, is investing fifteen million."

Su Ru said with some surprise, "An investment of nearly thirty million... this project is actually quite significant."

Then another thought occurred to her, and she asked, "Su Ye, is that Song Yi girl very close with the Yan Family?"

"She's very close with Feifan."

Yu Suye added, "Song Yi's brother, Song Yan, has a communications technology company called Rock Technology. It's a well-known unicorn company. Once it goes public, its market value could exceed ten billion."

She then reminded her, "See, Mom?"

"I'm not the only one who can see how outstanding Feifan is. If I hadn't made the first move, maybe that Song Yi would have snatched him up."

Su Ru said thoughtfully, "From what you're saying, this Song Yi isn't that far off from you, comparison-wise."

"Hey, you still haven't told me what your project actually is."

Yu Suye giggled. "It's closely related to the hospital. For confidentiality reasons, I can't tell you yet."

After a pause, Yu Suye hugged her mother's arm again, squirming a little as she said in a wheedling tone, "Mom, Feifan really is absolutely brilliant."

Su Ru reached out and caressed Yu Suye's face, sighing softly. "My approval doesn't mean anything. You know I don't get to make the final decision."

"And just to let you know, I have to go back to Jingcheng this Thursday. Your father has already called to rush me back several times."

"You should start thinking about how you're going to deal with your father, and your grandfather..."

「The next day, Wednesday!」

At nearly eight in the morning, Yan Feifan and Yu Suye arrived at the Affiliated Hospital. As soon as they walked into the teaching and research office, they were surprised to find Dr. Qin Ying was already there.

Qin Ying tossed a file to Yan Feifan.

"A thirty-three-year-old patient. When he was a child, a pig bit off most of his penis."

"You two need to think long and hard..."

"...about any good way to help him live a normal married life, just like any other man..."