Bai Hui made a dress for Bai Minghan, and Miao Huilan hid the miniature camera in the dress and gave it to her. When Bai Hui went out and met Bai Minghan, she hurriedly hid the camera in her pocket and took out the dress for Bai Minghan to try on. Chu Huaiqiu gave a detailed division of labor to the members of the expert team to prepare for the survival experiment, and everyone prepared separately. Director Zhao held a mobilization meeting and called on the workers to work overtime to complete the work. Lu Cheng came to the hospital to see Bai Hui whenever he had time. Bai Hui asked him about the progress of the water droplet project, and Lu Cheng reported to her truthfully.
Li Qiuchen took pictures everywhere whenever he had time, and Ding Jie followed him closely. Li Qiuchen discovered Ding Jie and skillfully got rid of his pursuit. Bai Hui came to the designated place to meet. Unexpectedly, the other party was Li Qiuchen. Li Qiuchen asked her to persuade Bai Minghan to come out. Bai Hui promised that the task could be completed without Bai Minghan's intervention. Li Qiuchen asked her to get the final assembly drawings of the closed test cabin. Bai Hui knew this task very well. It was extremely difficult, but in order to repay Kou Xuesong for saving her life, she reluctantly agreed.
Bai Minghan came to his old friend Lao Fu to help find a wine cellar. Lao Fu was grateful for his life-saving grace and promised to go all out to help. Bai Hui suddenly came to Lu Cheng for help, lying that she was being hunted by a teacher at the orphanage. She gave the titanium alloy to the teacher. Unexpectedly, the teacher was a spy. The teacher had already sent the stone to Taiwan. Bai Hui asked Lu Cheng to film it and seal the experimental chamber. After receiving the final assembly drawings, Lu Cheng promised to fly away with him once the work was completed. After careful consideration, Lu Cheng decided to take the risk to help Bai Hui.
Pang Hongmei practiced hard for a long time before she learned how to insert the wire rope. She asked Yang Deshan for advice, and Yang Deshan taught her the different insertion methods in the north and south. Chen Dongsheng asked Ding Jie to check with the workers in the north. Pang Hongmei demonstrated the wire rope insertion method and accidentally pricked her hand. She came to the hospital to bandage, and Bai Hui personally helped her treat the wound. Ding Jie hurriedly came to Pang Hongmei to report something. Fang Kai of the carpentry team was a serious suspect, and Bai Hui was outside the door. Hear it clearly.
Han Yundong vacated the idle air-raid shelter in the factory as a laboratory. He Xiwen went in and tested the air concentration and humidity inside, which fully met the test requirements. Chu Huaiqiu was very happy. He, Zhang Yan and others came to inspect the air-raid shelter and decided to do it here Build a closed experimental cabin.
There was a breakdown in the workshop equipment. Director Zhao heard the news and came to see what was going on. Wu Rui took advantage of him and took away the drawings from Director Zhao's bag. Ding Jie checked out the list of people who knew how to tie the northern knot, and Chen Dongsheng sent people to check them one by one. After a fierce ideological struggle, Lu Cheng still couldn't make up his mind, so he came to Bai Hui for help. Bai Hui gave him an ultimatum. If he couldn't get the drawings, the consequences would be disastrous.
Niu Peixian noticed something was wrong with the drawings brought by Director Zhao, so he came to Han Yundong to check. Lu Cheng insisted that he distributed them according to the numbers, so Han Yundong had to take out the master drawing from the safe and check it carefully. Pang Hongmei came to the carpentry workshop to find Fang Kai and learned that he was taking care of his wife who had just given birth at home. Pang Hongmei asked for the address of Fang Kai's home.
Pang Hongmei was patrolling the factory when she suddenly noticed someone passing by the door of the woodworking warehouse. She hurriedly chased after him, but the man disappeared. Pang Hongmei entered the woodworking warehouse, and the door was suddenly locked. Pang Hongmei shouted for help, and there were sawdust in the workshop. Suddenly a fire broke out and the fire got bigger and bigger. Pang Hongmei tried her best to smash the door, but the door didn't budge. The fire spread around Pang Hongmei, so Pang Hongmei had to block her mouth and nose with her clothes.
The workers saw the thick smoke and hurriedly called for people to put out the fire. Niu Peixian hurriedly went to put out the fire. Han Yundong put the drawings in the safe and left in a hurry. In his hurry, he dropped the key to the safe. Lu Cheng picked up the key and opened the safe with a white key. Hui took pictures of the drawings with his miniature camera. Ji Danyang came to the scene for questioning. He poured water all over his body and rushed into the sea of fire to rescue the unconscious Pang Hongmei. Bai Hui came to the warehouse and saw this scene from a distance.
After everyone's unremitting efforts, the fire was finally put out. Han Yundong hurried back to the office. Lu Cheng was so frightened that he hid quickly. When Han Yundong saw the safe key on the ground, he picked it up and went out. The medical staff tried their best to rescue her, and Pang Hongmei finally regained consciousness. When she saw Ji Danyang's black and gray face, she couldn't help but make fun of her. Ji Danyang felt sorry for Pang Hongmei and felt sorry for her.