From SARS and Ebola to COVID-19, 54-year-old Chen Wei has spent half of her life fighting against life-threatening viruses.

A mother, daughter and wife, Dr. Chen is a female general in the Chinese People's Liberation Army. She came back in the spotlight after she led the team developing China's first COVID-19 vaccine.

Dr. Chen was recalled to Wuhan, the epicenter of the virus, one day after the Chinese Lunar New Year, the biggest holiday in China for family reunion. She and her team didn't waste a minute to work at a makeshift lab for research and testing upon arrival. And almost 50 days later, the first vaccine was ready for clinical trials.