The coronavirus was a new type of virus that had never been encountered before. For medics in Wuhan, it was a life-or-death battle, a race against time. They look like ordinary people dressed in white coats, but in reality, they are soldiers, confronting the challenge, standing strong and never retreating. For more in-depth stories on the COVID-19 frontline, watch the six-episode documentary "Together Against COVID-19." Here is a three-and-half-minute glance of Episode 2: A Fight for Life.