[1] Set in the early days of the COVID-19 pandemic, it captures the struggles and human resilience[2][3] in the battle to survive the spread of the disease in Wuhan, China.

Early in the lockdown when the situation was dire and chaotic and there was a severe shortage of medical supplies, many hospitals actually welcomed media exposure to help them look for help.

Some of the medical teams sent from elsewhere in China to support Wuhan were also open to being filmed, partly due to their desire to have their own images documented in this historical moment.

As the producer and director, Wu found his two co-directors in mid-February[11] while researching a pandemic film for a U.S. network.

By late March, however, the media environment in China over COVID-19 narratives was severely tightened due to increasing geo-political tension, so the two of them decided to stop collaborating with Wu.

Just like the healthcare workers in this film, the co-directors Chen Weixi and Anonymous had to put on personal protective equipment every day, which was very uncomfortable to wear, was hard to breathe in and made them feel sick at times.