Gu Yang thought without hesitation: "Hair. The paternity test was done secretly by the Tong brothers and sisters. Tong Jiayin lives in the same dormitory with us. The hair should have been picked up from the trash can by her, right?"

Gu Jin guessed it was also hair.

After all, hair is the easiest sample to get, but also the easiest to mess up.

Noticing Gu Yang's last sentence, Gu Jin asked again: "Has she ever pulled your hair?"

Gu Yang shook his head. "I'm not familiar with her. She has no chance to get close enough to pull my hair."

Noticing that Gu Jin looked strange, Gu Yang asked, "What's wrong? Sister, do we need to pull out the hair to do a paternity test?"

Gu Jin nodded: "It has to have hair follicles, so in order to ensure accuracy, plucked hair is usually used.

Of course, naturally fallen hair can also be identified if it has hair follicles and has fallen out recently.”

Gu Yang nodded in realization, then became confused again, "But as far as I can remember, no one has ever pulled out my hair."

Although she is popular on the Huazhong University of Science and Technology campus, the people she is close to are only her good friends.

These friends would not do things for the Tong siblings behind her back.

As for the stranger, if he pulled her hair, she would definitely be impressed.

"Sister, do you suspect that the hair in the paternity test was mixed up?" Gu Yang asked.

Gu Jin nodded, "It's not impossible. If it wasn't pulled from your head, but picked up from somewhere else, then it's possible that it got mixed up."

Speaking of hair, Gu Yang suddenly remembered something.

Once before, at Yangcao Internet Cafe, when she and Yan Xi were playing games, Yan Xi seemed to have her hair pulled severely by a black fan.

If that person wasn't Yan Xi's hater, but was hired by the Tong family siblings to pull out her hair for a paternity test...

She was wearing a mask at the time, but Yan Xi was not wearing a mask.

From a certain angle, Yan Xi looked a lot like her. And that person was coming for her, not knowing that there was someone who looked like Yan Xi next to her.

Following this line of thought, it is not impossible that the hair samples were mixed up.

Gu Yang expressed his suspicions.

Gu Jin and Feng Jue both looked very serious.

Gu Pei also became serious.

Feng Jue immediately contacted Cao Cuo and asked him for the surveillance footage of Yangcao Internet Cafe.

Feng Jue said: "If we can find the person who pulled Yan Xi's hair that day through surveillance, and check whether there is any financial transaction between his account and the Tong brothers and sisters, we can confirm whether he is the person sent by them."

Gu Jin: "I'm just not sure how often the surveillance cameras at Yangcao Internet Cafe will automatically overwrite the account."

Feng Jue quickly received a reply from Cao Cuo, "It's covered once every two weeks. It's been so long, it's been covered several times."

Gu Pei came over, "Aren't you a hacker?"

Feng Jue glanced at him sideways: "Hackers are not omnipotent. After so many overwrites, the original files must have been completely deleted and cannot be found at all."

Gu Yang: "If we can't start from here, then we can only do another paternity test to confirm it."

Gu Jin nodded: "This is indeed the most direct way."

Gu Yang: "Then I will contact Tong Rao right away. Judging from her attitude towards Tong Sinian and Tong Jiayin, she should still care about blood relationship and will not refuse."

Gu Jin suggested: "Use blood, it's more accurate."

Now my sister’s hemophilia has been cured. She doesn’t have to worry about the bleeding. It’s okay to have some blood drawn.

(End of this chapter)