Before liberation, the Kuomintang set up a radio training class in Shiqiao Village.However, when the Kuomintang collapsed, they blew up the place.Five years ago, a fire broke out in Shiqiao Village, and the entire village was burned into ruins.Now, Zhang Yan led the police to the ruins, and Lao Jiang discovered a new set of footprints.Pang Hongmei followed the footprints and entered an abandoned building.There was a locked secret room inside, and Pang Hongmei used the key to open the door of the secret room.

There is a song - Mulan Ci - engraved on the wall. Pang Hongmei clearly remembers that her father often recited it to her when she was a child, hoping that she could become a hero like Mulan.The police officers carefully searched the secret room and found a music sheet, some anatomy tools, and a group photo of Pang Hongmei and Pang Shizhao.Pang Hongmei looked at these things and recalled the past events, and she shed tears sadly.Pang Hongmei searched hard for nine years and finally found the relics of her father Pang Shizhao.Pang Shizhao was unfortunately killed while trying to save his comrades who were imprisoned in Xiaohuilou.

Zhang Yan advised her to refrain from mourning. Pang Hongmei stood on the tower recalling the past. At this time, Ji Danyang came to her side in the rain to accompany her.Li Qiuchen personally went to the mine to take charge and called on the workers to work in three shifts so that more copper mines could be dug out to support the country's construction.The mine is very close to the Xiaohoushan air-raid shelter, so Zhang Yan sent police officers to patrol day and night and did not allow anyone to get close to the experimental base.The sealed survival experiment was about to begin. Xia Yutian sent Ge Yun to lead the team to the experimental base, and Bai Hui and Luo Shanshan also went to participate.Chen Dongsheng made a detailed division of labor for each police officer, and he, Ding Jie and Pang Hongmei were responsible for the safety protection work in the factory.Chu Huaiqiu announced the list of participants in the trial.

Lu Cheng hoped to take Bai Hui away during the sealing test, but he did not expect Bai Hui to also join the medical team.Bai Hui advised him to wait patiently for twenty days. Lu Cheng lived in fear every day and couldn't bear it.Bai Hui told him to take good care of himself and wait for her return.Ge Yun saw this scene from a distance and shook his head.Knowing that Bai Hui would stay in a sealed cabin with the test personnel for twenty days, Bai Minghan advised her not to participate, but Bai Hui insisted on going, so Bai Minghan had to give up.

Li Qiuchen asked Liu Simao to find a few people who dared to take risks, and told them the time when workers bombed the mountain every day, and planned to blow up the test cabin during the chaos.The survival experiment has officially begun, and the expert team members, medical team, and police officers are all ready to devote themselves to this test.Chu Huaiqiu, Zhang Yan and Han Yundong paid close attention to their every move outside the cabin.Liu Simao found the famous tomb robber Li Dazhuang and lied that the Kuomintang had hidden a batch of gold and silver treasures in the back mountain when they escaped, and bribed him to find them at a high price.Li Dazhuang brought two companions, Mo Zi and Lao Zhuo, to help.

Bai Hui sent vitamins to Ji Danyang, and Pang Hongmei secretly took the medicine.Luo Shanshan came over to measure Chu Huaiqiu's blood pressure. Wei Tongbin carefully checked the blood pressure monitor she carried before allowing her to enter the test chamber.Liu Simao, Li Dazhuang and his party found the cave where the treasure was hidden. After determining the location, they started digging for treasure.Unknowingly, three days have passed. The experts in the test cabin are recording data step by step and conducting physical fitness tests. The medical team is conducting physical examinations on time.

The mouse was accidentally bitten by a poisonous spider. Li Dazhuang rushed to treat his wound, but the poison was too deep. Liu Simao helped him go to Bai Minghan for medical treatment.Bai Minghan quickly detoxified the mouse.Director Guo Feng personally led the personnel to continuously detect radio signals. The detection vehicle shuttled through the streets and alleys. The police officers quickly determined the signal range of the enemy radio station, and Lao Jiang immediately reported to Zhang Yan.