Faced with such instructive words from Li and Xiao, the police once suspected that the two were working together with Wang Xingde and his wife. Fortunately, Zhang Cheng was rational and shrewd and decided to first investigate whether the four were related.

Zhang Cheng entered the lounge and took away the electronic devices from the two people. The mobile phone he got from Wang Xingde's dormitory was also taken away.Li Shiqing stopped Zhang Cheng, who was about to leave, and wanted to ask if the accident occurred at Tao Yinghong's homemade bomb manufacturing site.At the same time, the police also found that the four people did not have any call records and their life circles did not overlap.

Li Shiqing anxiously wanted to find out about Tao Yinghong, but this behavior made Zhang Cheng even more suspicious.Employees of the bus company, Wang Xingde's roommate, and the locksmith Xiao Heyun contacted all identified the fact that Li and Xiao had faked their identities and secretly collected clues.

Xiao Heyun and Li Shiqing took advantage of the situation and took the initiative to confess that they had stolen Wang Xingde's cell phone for private investigation. They also used Li Shiqing's survivor syndrome to dispel Zhang Cheng's concerns. Xiao Heyun pretended to be unintentional and set the time of the explosion at 1:45.Inform Zhang Cheng of the local situation.

Based on this news, the police quickly discovered that the mobile phone collected by Wang Xingde belonged to his daughter Wang Mengmeng.Wang Mengmeng was riding the No. 45 bus five years ago when she was hit by a truck behind her and died because she insisted on getting off in the middle of a bridge where there was no bus stop.But Li Shiqing clearly remembered that Wang Xingde told her that her daughter was also studying at Normal University and already working.

The last call record on Wang Mengmeng's mobile phone was at 1:44 pm on May 13, five years ago. It was a call to her father Wang Xingde.This unanswered call became her last message, because at 1:45 she was hit and killed by a truck while getting out of the car.

Thanks to the clues provided by Li Shiqing and Xiao Heyun, the bus bombing was solved in less than eight hours.Faced with Li Shiqing who wanted to know the motive for the crime, Zhang Cheng, as a police officer, naturally could not reveal it at will.Xiao Heyun started acting, pretending that his girlfriend would not give up until she knew the truth.After Zhang Cheng thought about it, he told the two people the whole story.

Before leaving, Li Shiqing asked Zhang Cheng whether he would call the police if a stranger called him saying there was a bomb on the bus.Zhang Cheng gave an affirmative answer without hesitation and told them that protecting the safety of citizens is their duty as police officers.Xiao Heyun stepped forward and quietly asked if he could leave Zhang Cheng's phone number.

Returning to the time loop, Li Shiqing discovered that Xiao Heyun's nose began to bleed profusely. Xiao Heyun had to confess that in fact, his body would become weaker after each cycle. Perhaps this cycle had a limit on the number of times for him.Xiao Heyun reassured Li Shiqing, quickly wiped away the blood, and sent Tao Yinghong's photo to Zhang Cheng.

Zhang Cheng received a call from a stranger who affectionately called him Lao Zhang and told him to read the messages he sent him.Seeing the text in the message, Zhang Chenghuo quickly led the police team out of the country to conduct control at Yanjiang West Road Station.

Facing Li Shiqing who was worried about herself and shed tears, Xiao Heyun hugged her tightly to express comfort and encouragement.The two repeated their old tricks, yelling on the bus on the pretext of encountering a pervert, and forcing the bus to stop to delay the incident.After the farce ended, Xiao Heyun took the opportunity to sit behind Tao Yinghong to coordinate police actions.

Seeing that the time of the explosion was approaching, Wang Xingde stepped on the accelerator and drove towards the bridge, which panicked the police stationed at the platform.Zhang Cheng led a team to catch up. Several police cars blocked the bus with their bodies, making it difficult for the bus to move.Xiao Heyun shouted to Lao Jiao and others to control Tao Yinghong, but Wang Xingde locked the car door and vowed to die together.

At the critical moment, Xiao Heyun smashed the car window again and took out the pressure cooker containing the bomb.Zhang Cheng threw the pistol to his colleague and reached out to take the bomb.He shouted for everyone to stay away and rushed to the bridge alone.The moment the bomb was released, flames burst out from the explosion, and Zhang Cheng fell to the ground with scars all over his body.