Zhang Ashui pretended to be the driver of the city theater troupe to deliver speaker equipment to the auditorium and asked Ma San to hide under the car. Zhang Ashui was stopped by the police because he did not have a pass. The staff checked the equipment and the security section chief Li Guangming arrived in time to explain the emergency and swore the oath. The conference was about to be held and the equipment had to be in place immediately, so the police officer allowed Zhang Ashui to drive the equipment to the auditorium. Pang Hongmei was ordered to go to Masanjia to investigate. No explosives were found, but she found that the desk lamp bulbs were modified from car bulbs. Chen Dongsheng reported to Zhang Yan immediately, and Zhang Yan ordered that no vehicles from outside units be allowed to enter the auditorium. Zhang Ashui drove the car to unload the equipment, and the police officer ordered him to leave immediately. Zhang Ashui parked the car in a secluded place and put Ma San down. Ma San followed him into the auditorium holding the explosives.
Pang Hongmei came to the auditorium to check and learned that the city theater troupe's truck had come to deliver audio equipment but had not come out yet. Pang Hongmei and Chen Dongsheng checked around and finally found the truck. There was no one in the truck. Pang Hongmei dug out two copper coins under the car seat. Chen Dongsheng recognized the parts that were necessary for enemy agents to modify explosives. He realized the seriousness of the problem and immediately called Zhang Yan to report it. Zhang Yan immediately decided to postpone the swearing-in ceremony to eight o'clock and sent police officers to inspect the auditorium. Someone was also sent to arrange the expert group into the conference room.
Chen Dongsheng learned the details of the incident from Li Guangming and suspected that the speakers were man-made sabotage. Pang Hongmei cooperated with the police to evacuate the participants outside. Ji Danyang came after hearing the news. Pang Hongmei explained the situation to him. Ji Danyang suspected that the separatists would install bombs. In the chimney, Pang Hongmei rushed to the boiler room without saying a word. Pang Hongmei came in and saw a worker burning a boiler. She recognized at a glance that the man's shoes belonged to Ma San, so she called out "Ma San". Ma San agreed casually. Pang Hongmei rushed to catch him, but Ma San San resisted desperately, and the two of them fought. Ji Danyang arrived soon after, and Ma San targeted Ji Danyang. Pang Hongmei tried her best to protect Ji Danyang, and kicked Ma San to the ground. Ma San fell heavily on the coal pile and was hit by iron. The pliers pierced his body and killed him on the spot, splattering Ji Danyang's blood.
Chen Dongsheng led people to the boiler room. Ji Danyang was frightened out of his mind by the bloody scene just now. Pang Hongmei asked him to go back to the conference room first. He took off his blood-stained shirt and threw it on the ground, and then left without looking back. The police officers found the explosive bag in the chimney and found that it was filled with cinders. Chen Dongsheng realized that Ma San and the others used the chimney as a cover. They continued to investigate in the boiler room. Pang Hongmei found the wellhead of the hot water pipe leading to the auditorium, and then Go down with Chen Dongsheng to investigate.
Ji Danyang reported to Chu Huaiqiu about the installation of explosives by enemy agents. Chu Huaiqiu brought the expert team to meet with the comrades outside the auditorium. In order to calm everyone's nervousness, Chu Huaiqiu gave an impassioned speech. Understand the importance of water droplet engineering. Pang Hongmei and Chen Dongsheng worked hard and finally found the explosive tied to the pipe. They worked closely together and quickly dismantled the explosive. After Zhang Ashui installed the explosives, he got out of the manhole cover and happened to see Li Guangming leading a patrol. He threw a stone and hit Li Guangming, who pushed the other two people away. Zhang Ashui's sour-chu explosive will explode in two minutes, so he asked Li Guangming to send him out. Li Guangming covered him to escape over the wall, but was caught by the patrolling police. Li Guangming had no choice but to shoot Zhang Ashui. Zhang Ashui was injured, and he hit him with his backhand. Li Guangming shot him, then climbed over the wall and escaped.
The swearing-in meeting was held on time. The police officers from the special team had not arrived yet. Han Yundong suggested singing a song to liven up the atmosphere. Chu Huaiqiu asked He Xiwen to lead the expert group to sing. He Xiwen refused desperately. Lu Cheng recommended Bai Hui to lead the singing, and Bai Hui led the singing. With the medical staff singing a song, the swearing-in ceremony officially began.
The police officers followed the direction in which Zhang Ashui escaped to the river and found a lot of blood on the ground. Zhang Ashui stumbled to Bai Minghan for help. Bai Minghan made various excuses to shirk the blame. Zhang Ashui claimed to know the details of Bai Minghan, so he drew a gun at him. Bai Minghan had to perform surgery on him to remove the bullet, and he was very disdainful of his ability to do things. Zhang Ashui was worried about being caught and wanted to stay overnight in the clinic. Bai Minghan refused and took advantage of Zhang Ashui's unpreparedness to hand over Zhang Ashui's gun and forcefully drove him away.
Kou Xuesong, the intelligence director of the Taiwan authorities, learned that Zhang Ashui and Ma San's actions failed. He ordered Snow Wolf to silence Zhang Ashui and also asked Snow Wolf to suspend all sabotage operations to avoid exposing his identity. Bai Hui went home happily after attending the swearing-in ceremony. When she entered the door, she saw blood on the ground. Bai Minghan lied that he accidentally scratched his arm, and Bai Hui greeted him with greetings. Ji Danyang witnessed the murder of Ma San. He was in a daze every day and could not calm down to work. Pang Hongmei lived in the building opposite Ji Danyang and she saw this scene clearly from the window.