In 2021, humans have been fighting with Covid-19 for a year, a year in which the virus has claimed too many lives, torn families apart, and faced a severe test in human history. This is a battle between humans and the virus, a war we can't afford to lose.Through the unremitting efforts of scientists of various countries developed the coronavirus vaccine, has been successfully listed at present, believe that in the near future human will completely overcome the virus, a better tomorrow is waiting for us to open up, greensail will be global merchants together looking forward to the haze cleared, to meet the dawn!!