New coronavirus (COVID-19) has brought a really great threat and sadness to the world. It was feared that the initial stage of infection would be the most infectious. There have been many deaths all over the world. I am currently not involved in drug discovery, but I felt that the discoveries about 20 years ago must be useful, and I came up with a proposal. However, I have no xperienced and I could not reach the place of drug discovery to protect...