As a photographer who has been cooperating with Sinovac Biotech for more than 10 years, I have by far visited their COVID-19 vaccine production base eight times since 2020. In camera perspective, I have recorded the construction, equipment installation and commissioning, production, and transnational shipping at the vaccine production base. I have witnessed the birth of Sinovac Biotech's CoronaVac.

When I visited Sinovac Biotech's production base in Beijing's Daxing district for the first time, I had realized that this was the very production workshop of the COVID-19 vaccine. At that time, all the facilities except for the building frame were under construction, and the production equipment was also being tested, installed, and debugged one after another.

The construction was well underway. The construction of the base started on March 29. By the time of my fifth visit on Oct 15, the office building had already taken on a new look. The first phase of the Corona-Vac had already been completed and put into use, and the second phase was in full swing.

There were so many things I had great feelings of during the entire filming. After getting into the workshop, I had a real sense of walking through a maze because of the high similarity of the passages. Each area in the workshop is independent, and even the air is independently tested.