Kang Wei and Ding Lin from Nanyang CDC. The epidemic situation in novel coronavirus continues to spread, and countless "retrograde people" in the medical industry have embarked on a journey. In this group of "retrograde", there are two people, they are Kang Wei and Ding Lin of Nanyang CDC, and members of Nanyang NLD jokingly call them sisters on the epidemic prevention front. Because they are all from the CDC and Nanyang NLD Wancheng Medical Branch. Both of them work hard, because the work they are engaged in is extremely dangerous even under normal circumstances. In this battle against the epidemic, they did not attract attention, and no one saw their rhetoric in the media. We don't even know they exist. But they are indeed the protagonists in this fight against the epidemic and play a vital role as the first contact.