Xi' an has been quarantined in Mianyang for three days, and has been informed that it is a secret contact. How many more days will it be quarantined?

Five days. Xi 'an has been quarantined in Mianyang for three days, and the notice is confidential. According to the regulations of the epidemic prevention and control department, it will be quarantined for another five days, and masks are also needed. Isolation medical observation is an isolation measure taken during the epidemic in COVID-19, which refers to the close contacts of confirmed cases, suspected cases and asymptomatic infected persons, entry personnel, and other personnel who carry out centralized observation in designated places according to the needs of prevention and control work.