Two days National Level Chess Tournament at Kaup from 9th December

Cases without a clear exposure history were scattered outside the transmission network and were not part of it. Even though Chinese authorities never let their guard down since the beginning of the coronavirus disease 2019 (COVID-19) crisis and the current prevention and control measures are implemented soundly in China, the resurgence of the epidemic has been noted in various cities across the country. Therefore, it is important to understand the evolution of the epidemic in a city if we are to mitigate its risk.