According to the Yonhap news agency, 324 new cases of new crown were confirmed in South Korea on the 21st, with a total of 16670 confirmed cases. This is the first time in recent weeks that the number of cases in South Korea has exceeded 300. < p > < p > the Seoul municipal government said on the 20th that it would completely ban the holding of more than 10 people in Seoul from 0:00 on the 21st to 24:00 on the 30th. The municipal government said that Seoul has a large population density and a large floating population, which is prone to multi generation transmission of the virus. Therefore, it has decided to take pre emptive measures to curb the spread of the epidemic. According to the news of the Ministry of epidemic prevention in Beijing, there were 14 new cases of infection in the central community since the last seven days. South Korea’s epidemic prevention department has repeatedly blocked the transmission route through rapid tracing of the source of infection, but public opinion is worried that the previous epidemic prevention ideas will not work this time, and experts suggest to start the three-level response mechanism to maintain social distance as soon as possible. There were more epidemic cases in nurseries and nurseries in the capital, and the epidemic prevention facilities were found in many places. The “love first” church and the Guanghuamen rally in Chengbei District of Seoul have intensified the spread of the epidemic throughout the country. This week is a watershed in deciding whether the epidemic is serious or not. It also warns that once the epidemic is out of control, it will follow the European and American traditions.