Early 2020 will undoubtedly be an unforgettable period left in the mem ory of all Chinese people.Up until mid February, a battle had beenraging for several weeks: the one against the new coronavirus epidemic.At the heart of it, the silhouette of a woman in her 70s stands out among all that of Professor Li Lanjuan, epidemiologist and member of the Chinese Academy of Engineering.She has already been on the front line.at the very forefront, before, when SARS broke out in 2003.Drawing on this experience, her team succeeded in identifying the coronavirus strain at the end of January.