Thinking that He Tongfang might be mentally unstable and possibly blaming his own predicament on him, Lin Jie didn't take Lin Miao's words lightly.

He took Lin Miao to the property management's surveillance room.

Manager Zheng from the property management was very eager to oblige Lin Jie's request and brought up the surveillance video from earlier.

In the surveillance video, near the entrance of the underground parking lot, during that time, the Lin siblings noticed a man wearing a gray down jacket hurrying by.

Unfortunately, the surveillance footage wasn't very clear, and the man's face was somewhat blurred, making it impossible to confirm if he was indeed He Tongfang.

"Miaomiao, is this the person you saw just now?"

Lin Miao stared at the captured image for a while and hesitated before saying, "Brother, at that time, it just flashed before my eyes; I only took a quick glance and now I'm not sure."

Lin Jie understood this situation; he had had similar experiences before.

For example, walking through a bustling street, a person's image suddenly surfaced from the depths of the mind, believing he saw that person, but upon turning back and looking carefully, found nothing.

It's a kind of triggered image memory.

When seeing the same hat or clothing, or even a similar walking posture, it can evoke a certain image from the depths of the brain, leading you to mistakenly believe you saw someone or something when in fact, you didn't.

Some people are very certain that it's their first time visiting a place, yet they feel an extraordinary sense of familiarity, even a surprising feeling as if they've been there in a dream, also influenced by this type of memory.

Returning to their apartment from the property office, Lin Jie said seriously, "Miaomiao, perhaps you really did see He Tongfang. Be more cautious when going out in the future, and try not to go to secluded places alone."

After thinking for a moment, he added, "Tomorrow, I'll buy you pepper spray and a stun gun just in case!"

Lin Miao giggled and said, "Brother, isn't that a bit over the top?"

"Even if you're not wary of He Tongfang, you're so beautiful, you need to be on guard against some perverts who might take risks! It's always necessary to be a little prepared and take preventive measures!" Lin Jie said earnestly!

Lin Miao laughed joyfully and said, "Brother, what do you want to eat tonight? I'll cook!"

Lin Jie didn't want to make it difficult for her and said casually, "Tomatoes and eggs, any greens will do. For meat, just slice some cooked food. We didn't eat too little for lunch either."

"No problem, I'll go change my clothes first!" Lin Miao hurriedly ran back to her bedroom.

Just then, the doorbell suddenly rang.

Lin Jie didn't expect that the person ringing the doorbell would actually be An Kemeng.

She was carrying a backpack, clearly having come straight over after school.

Along with her was another girl with delicate features, roughly the same age, who should be her classmate!

The girl seemed a bit shy, always keeping her head down, not daring to look up at Lin Jie.

An Kemeng held the girl's hand and introduced, "Brother Lin Jie, this is my classmate Cai Chunnuan. She's not feeling well; could you take a look at her?"

She explained further, "Chun'nuan was a bit embarrassed to go to a clinic or hospital, so I brought her straight to you."

Lin Jie suddenly understood and led them to sit down in the living room!

He poured each of them a cup of hot water, smiling, "Hello, Cai Chunnuan! Kemeng considers me like an older brother, so you can think of me as one too."

"Can you tell me where you're feeling uncomfortable?"

Cai Chunnuan didn't speak, just lightly touched An Kemeng's hand.

An Kemeng made a helpless expression to Lin Jie and said, "Brother Lin Jie, Chun'nuan experiences occasional abdominal pain, and her lower abdomen has also slightly bulged..."

Fearing Lin Jie might misunderstand, she further explained, "Chun'nuan has never had a boyfriend, so it can't be for that reason!"

A problem with a teenage girl's abdomen?

Seeing Cai Chunnuan so shy, Lin Jie couldn't directly examine her and had to ask again, "When does your menstruation usually come? Is it regular? Is the flow heavy?"

"I... haven't had my period yet..."

Though her voice was as soft as a mosquito's hum, Lin Jie heard her clearly.

Girls generally start menstruating between the ages of 12 to 18, most commonly between 13 to 16.

Nowadays, children's nutrition levels are generally better, and they may start a bit earlier; starting at 11 is also considered normal.

"How old are you exactly?" Lin Jie asked again!

Cai Chunnuan answered in a low voice, "Sixteen years and three months!"

Seeing that she was as tall as An Kemeng and even more well-built, Lin Jie noted that at this age, although it's still medically normal to have not started menstruating, it's a bit late.

An Kemeng, noticing Lin Jie glancing at her now and then, snorted and said with a slightly flushed face, "I started early, at thirteen. Could Chun'nuan's abdominal pain be because of this reason?"

Lin Jie, a bit troubled, said, "Maybe it's related to this aspect. I don't have diagnostic equipment here; I can only do a preliminary examination with my hands! Cai Chunnuan, do you mind?"

"Kemeng, you're here!"

At this moment, Lin Miao, who had changed clothes, came to the living room! She saw An Kemeng and greeted her warmly, "Hello, Kemeng! Is this pretty little sister your classmate?"

An Kemeng introduced Lin Miao and Cai Chunnuan to each other and explained their purpose for coming.

Lin Miao responded with an "oh" and laughed, saying, "It's definitely right to find my brother, he's capable of anything. I'll go prepare dinner now, you both can have dinner at my place!"

When Lin Miao went to the kitchen, Cai Chunnuan whispered, "You're a doctor, I don't mind, you can examine me. I've been feeling unwell for a long time, I hope you can find out the cause."

Lin Jie went to the study, and when he returned, he had a stethoscope hanging around his neck and was wearing rubber gloves.

Under his instructions, Cai Chunnuan lay down on the sofa, pulled down part of her clothing, and exposed her pale belly.

Lin Jie discovered that Cai Chunnuan's belly was indeed slightly swollen.

However, the swelling was too low to be in the position of the uterus.

Lin Jie gently pressed on the swollen belly and asked, "Does it hurt?"

"It feels bloated, but not painful!"

Lin Jie carefully pressed further. It felt like touching a rubber water balloon, very elastic, and he didn't feel any notable lumps or hard spots!

He was struck with a thought, put on the stethoscope, and placed the head on the swollen part of the belly.

At the same time, he lightly tapped Cai Chunnuan's belly with his fingers.

Hearing the fluctuation sounds through the stethoscope, Lin Jie made a rough guess in his mind.

However, confirming this final issue was a bit tricky!

Seeing Lin Jie's troubled expression, An Kemeng became a little anxious and asked eagerly, "Brother Lin Jie, have you found a big problem?"

Seeing Cai Chunnuan get up, her face also suddenly turned tense, Lin Jie quickly explained, "It's not a big problem, but... have you taken health and hygiene classes?"

An Kemeng replied, "We took those in middle school. Brother Lin Jie, we know everything, you don't need to hold back, just say it directly!"

Lin Jie thought for a moment, brought out a laptop, and found several pictures online, explaining to An Kemeng and Cai Chunnuan, "It's not completely closed here, in fact, it has an opening."

"When menstruation comes, it flows out from this opening."

"However, some girls are born with it closed, with no opening. I suspect, Cai Chunnuan, you are in this situation. You should have had your period long ago, but it can't flow out and is all trapped inside your body."

An Kemeng and Cai Chunnuan exchanged glances, their faces gradually turning red.

An Kemeng said, "Nuan Nuan, you don't know Brother Lin Jie's medical skills, they're better than those expert doctors in big hospitals! If he says so, it must be right."

"It's just a possibility, not certain!"

Lin Jie hurriedly corrected An Kemeng's definitive words, saying, "I can only say this is relatively likely and requires further examination to confirm! But this examination..."

He shifted his gaze to An Kemeng!

"Brother Lin Jie, leave the examination to me!"

An Kemeng stood up, took Cai Chunnuan's hand, and said, "Come on, I'll take you to the bathroom to check!"

The two of them went to Lin Miao's bedroom, and about ten minutes later, they returned, but Cai Chunnuan's head hung even lower.

An Kemeng excitedly said, "Brother Lin Jie, you're amazing, your diagnosis was correct."

"What should we do now?"

Lin Jie chuckled, "It's very simple, make a small incision there and let the accumulated blood out."

"However, I don't know how long the blood has been accumulating, and to prevent infection and inflammation, a check and thorough cleaning are necessary. So, Cai Chunnuan still needs to go to the hospital, I can't do it here."

Cai Chunnuan raised her head, blushing as she looked at Lin Jie, and said, "Thank you, Dr. Lin! Now that I know the cause, I won't let my thoughts run wild. I'll tell my mom when I get home, and have her take me to the hospital!"

"Thank you again! Mengmeng, thank you too!"

Cai Chunnuan insisted on leaving without staying for dinner.

Originally wanting to stay, An Kemeng could only leave with a look of resignation and said regretfully, "Brother Lin Jie, I'll come next time to taste the meals you and Sister Miaomiao cook!"

"Sister said your skills are quite good!"

Lin Jie nodded and smiled, "Alright, let's wait for next time! Next time, let me know in advance so I can prepare to cook my best dishes for you. This time, it was Miaomiao who cooked, and it was done in a rush, so it might not suit your taste!"

At this moment, Lin Miao's voice came from behind Lin Jie, "I heard that, brother, you're not allowed to badmouth me behind my back, my skills have improved a lot, okay?"

After sending off An Kemeng and Cai Chunnuan, Lin Miao, accusing Lin Jie of badmouthing her, left all the kitchen work to him.

Soon after dinner, Lin Jie received an unknown call.

"Hello, Junior Brother Lin! I'm Shijing Mountain, one of Professor Chen's PhD students. The holiday is approaching, and those of us who are PhD and master's students under Professor Chen are thinking of getting together tomorrow night."

"Junior Brother Lin, do you have time tomorrow night?"

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