Recently, in order to further curb the rapidly rising trend of Haizhu epidemic, Guangzhou sent five sampling commandos, a total of 2500 medical personnel, to the high-risk area of Haizhu District to support on-site nucleic acid collection. In addition to door-to-door sampling, medical staff also undertook many other tasks, such as guiding residents to carry out antigen testing, conducting protection training for volunteers, etc., making every effort to find out every infected person and strive to cut off the transmission chain as soon as possible. The medical staff served as the infection control supervisor to carry out protection training for volunteers. After receiving the emergency notice from the Guangzhou Municipal Health Commission, the First Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine (hereinafter referred to as the "First Hospital of Guangzhou Traditional Chinese Medicine") quickly assembled again, and sent 30 commandos to collect nucleic acids for the control personnel in high-risk areas. Climbing stairs in protective clothing is a physical challenge. "The body keeps emitting heat and sweat drips down the cheeks." Gao Jing, the commando leader and head nurse of the Hematology Department of the First Hospital of Guangzhou Traditional Chinese Medicine, said. Although the team members were tired from the high-intensity and high-risk operations, they did not retreat. When they received the order to move to Houjiao Village, Nanzhou Street, they once again threw themselves into it without hesitation. Houjiao Village is a typical urban village area. The characteristics of large population density, small building spacing, and concentration of factories and workshops increase the difficulty of epidemic prevention and control. Because there are many outsiders in Houjiao Village, according to the requirements of the neighborhood committee of the community, the team members also need to register the personal information of the residents one by one when they come to take samples, and guide them to do antigen testing "one-to-one". Many "Shaking Hands", "Narrow Alley", "One Line Sky", and factory lofts have increased the difficulty of door-to-door sampling. The commandos can only register information by phone and remind residents to go downstairs to participate in nucleic acid testing with a "big speaker". The medical staff also acted as a sense control supervisor. Gao Jing said that most volunteers were the first time to take part in door-to-door sampling. After finishing the task, medical staff should explain the correct order of removing protective equipment to avoid infection due to improper operation. It is urgent for the "veteran" of epidemic fighting to guarantee the logistics and give the team members a sense of security to fight against the epidemic. Guangdong Provincial Hospital of Traditional Chinese Medicine quickly convened 50 medical and nursing personnel to form a "Haizhu Commando" to support Haizhu District to carry out nucleic acid testing. Xu Shihao from the Cardiovascular Arrhythmia Department of Dade Road General Hospital of Guangdong Provincial Hospital of Traditional Chinese Medicine is one of them. This "post-95" young man is already an experienced "veteran" of nucleic acid sampling. Since May 2021, he has gone out to support nucleic acid sampling for 11 times. Logistical support is equally important for forward support. The hospital prepared the protective materials, emergency medicine, daily necessities and food required by the commando overnight. This time, Huang Chaoming, from the dialysis department of the University Town Hospital of Guangdong Provincial Hospital of Traditional Chinese Medicine, was responsible for the logistical support of the commando. He had participated in the anti epidemic work in Wuhan, Sanya and other places. In his previous work, he has accumulated certain material support experience, and is responsible for coordinating everyone's life, coordinating various needs and dynamically managing medical materials, and coordinating and communicating with the hospital rear area. He said that he should do his best to give the team members a full sense of security, so that everyone can feel at ease and warm. The materials or daily necessities and food needed by the team members due to the different working hours