Which episode is Hua Biao and Li Yu chasing wanted criminals in the TV series "The Young Man Is Not Tough"?

Episode 12

Li Yu and Xiao Xi called his mother who was on a business trip in Hong Kong. After Xiao Xi left, Li Yu and her mother had a pleasant chat, but after hanging up the phone, they found out Father was in contact with Aunt Huang, and Aunt Huang asked Li's father to give Li Yu new leather shoes, but Li Yu refused directly. Back at class, Huang Chengcheng didn't come. It turned out that Huang Chengcheng went to Li Yu last time and lied to him that he had chickenpox, but he was infected when he returned home. Li Yu felt a little guilty when he found out. Hua Biao actually asked for leave. It turned out that this day was the death anniversary of Hua Biao's parents, and he was preparing sacrifices at home. In the evening, Hemei and Yang Xi rode to Hua Biao's house to pay homage to his parents. Suddenly, they heard a strange whistle, playing "There is a Cloud Made of Rain in the Wind." Kazumi remembered that there was a wanted criminal recently related to the whistle, and they were scared when Li Yu and Erjo suddenly rushed out, making them feel a little more at ease. But when it came to whistling, Li Yu and Er Tiao both said that they couldn't whistle... After the Speed ??Five paid homage to Hua Biao's parents, Hua Biao gave the fruits to everyone to eat together on the roof. Yang Xi didn't like spitting out the seeds when eating watermelon, and she wouldn't listen no matter what Li Yu said. Hua Biao taught Yang Xi to spit out seeds and hit the target, which helped her get rid of this bad habit. Situ Ertiao, Hua Biao, Yang Xi and others competed with Huiying's classmates in a roller skating competition. The five of them joined forces and beat Huiying to a pulp. When Yang Xi returned home in the evening, her parents posted a wanted notice for her to pay attention to her safety, then locked the door and went out to see the patients. Li Yu was watching TV and found out that there was a fire in the building where his mother worked in Hong Kong. He immediately called his mother but couldn't get through. There was a power outage at this time. Li Yu went downstairs and met Huang Chengcheng. The two went out to find a place with electricity to follow the news. and phone calls. Yang Xi, who was at home, remembered that the man on the wanted notice was the exhibitionist that day. She was originally scared and encountered a power outage. After contacting her brother Li Yu to no avail, Yang Xi called Hua Biao, but because the door was locked by Yang Xi's parents, Hua Biao couldn't get in, so he sat at the door and told Yang Xi jokes and stayed with her all night. The next morning, Yang Xi saw the news about the fire and quickly went upstairs to look for Li Yu. Fortunately, Li Yu's mother returned to Japan the day before the fire and nothing happened. Yang Xi and her family went to the suburbs to attend her cousin's funeral. Because it was already very late, Yang Xi thought she would have an exam the next day, so she wanted to go back early. But neither her brother nor her parents could leave, so she had to take the bus alone. On the bus, Yang Xi discovered that a man in the back row looked very much like the wanted criminal. She was so frightened that Hua Biao suddenly appeared outside the bus window riding a bicycle, singing to her while chasing the bus. When Yang Xi arrived at the station, she rushed out of the car and met Li Yu who came to pick her up. Hua Biao left on his own after seeing that she was safe. Li Yu sent Yang Xi downstairs and asked her to go upstairs first while he went to buy her a midnight snack. When Yang Xi returned to the dormitory and remembered that she forgot to lock the door, she heard a whistle and saw the wanted criminal entering her home through the crack in the door. Hua Biao suddenly remembered that the man behind Yang Xi on the bus seemed to be a wanted criminal, so he turned back and saw Yang Xi trying to climb through the window. He immediately went upstairs to fight with the prisoner, and teamed up with Li Yu, who had just returned, and the police patrolling nearby to catch the prisoner. Li Yu and Hua Biao appeared in the newspaper and were commended for their bravery. Teacher Kong was very happy. When Li Yu saw his father breaking up with Aunt Huang for him, he felt very guilty and felt that he had hurt the person who loved him.