Episode 3 recap: Bian Jie is not the real Bian Jie.

Wang Shi Tu began to doubt Bian Jie's identity, as he compared the photos of Bian Jie as a child and now, and noticed that the shape of his ears did not match. Ears do not lie and do not change with age, so based on the ear shape, Wang Shi Tu concluded that the Bian Jie who has returned is not the real one.

He informed Qin Yong about this, but Qin Yong did not believe him, as the scars on Bian Jie's arm and other relevant information confirmed that he was indeed the same Bian Jie who had gone missing years ago. Especially the scar, which was at least 7-8 years old, if Bian Jie was an imposter, he would have had to start preparing for it 7-8 years ago, which seemed unrealistic to Wang Shi Tu, who thought the scar might just be a coincidence.

Bian Jie's homeroom teacher, Ms. Zheng, came to the house. She was also happy to hear that Bian Jie had returned, and she wanted to borrow the essay he had won an award for back then. Both Bian Jie and Jin Man Fu seemed nervous, and Jin Man Fu said he was worried that seeing the essay would upset Bian Mei Zhen, so he had thrown it away. But Bian Mei Zhen remembered that her son had written an essay about her, and she had kept it.

Bian Jie panicked, and when he saw his mother take it out, he quickly tried to take it, hoping to make a copy for the teacher. But the teacher said she would just go to the school the next day and have it printed. Seeing no other option, Bian Jie pretended to trip while handing the notebook to the teacher, spilling the tea all over the essay. Jin Man Fu then suggested letting the notebook dry before sending it to the teacher, and the teacher had no choice but to agree.

Wang Shi Tu's disciple obtained Bian Jie's notebook, and Wang Shi Tu, who had planned to examine the handwriting, was left bewildered, as Bian Jie's handwriting was the same as the one they had seen when taking his statement earlier. However, Wang Shi Tu still noticed something strange - the notebook was missing a page and seemed to have been wet. After learning the situation from his disciple, Wang Shi Tu's suspicions were reinforced, as the teacher had not taken the essay in front of Bian Jie and his family, but had only received it the next day, giving Bian Jie ample time to tamper with it.

Moreover, the essays were all printed on school-issued notebooks, so the last page would have the printing company's name and date. Although it had been torn off, the binding date was still visible, and Wang Shi Tu discovered that it was a 1996 notebook, not from 1993 as it should have been, confirming that Bian Jie had deliberately tampered with it.

From the shoes to the notebook, Wang Shi Tu knew he had encountered a formidable opponent.

The swallow and Bianjie were surrounded by people led by Huangmao on the road, and during the fight, Bianjie was knocked unconscious. Luckily, the police arrived in time, or else Bianjie would have been in danger. Bianjie only suffered a mild concussion, and Jin Man Fu was very worried. At this time, Wang Shi Tu also proposed a paternity test, so he angrily sent the guests away.

However, after this incident, Qin Yong also felt that Wang Shi Tu's suspicion was reasonable, because Huangmao called Bianjie "Little Seven" at the time, and now Huangmao had run away, so Qin Yong decided to go to the riverbank himself to investigate Huangmao and the forces behind him. Wang Shi Tu was maneuvering around Chaoyang and Bianjie. He found a way to obtain Bian Mei Zhen's hair with follicles from Bianjie's bathroom, and he also intentionally asked Bianjie to come to the police station to identify the person who attacked him, and he also had Bianjie drink a glass of water.

When Bianjie returned home, he heard Jin Man Fu say that Wang Shi Tu wanted them to do a paternity test. Bianjie didn't really understand at first, but after learning more, he realized that it could be done through hair and saliva. He remembered that Wang Shi Tu had borrowed the bathroom a few days ago, so he went to the bathroom and found a lot of hair on Bian Mei Zhen's comb.

Moreover, he had used their blankets and drank water at the police station, so it seems that evidence was left behind. He knew he couldn't stay much longer, so the next day he went to the factory to ask the finance department to pay his salary early, then he bought many gifts for his family members. After giving them the gifts, he quietly packed his things and left at night. Bian Mei Zhen heard the sound of the door closing and went to Bianjie's bedroom, only to find that he was gone, leaving behind a note saying he had gone to visit a classmate in another city. Bian Mei Zhen ran from home, calling Bianjie's name as she ran.