func getCurrentDay() -> String {
        let today = Date()
    
        let myCalendar = Calendar(identifier: .gregorian)
        let weekDay = myCalendar.component(.weekday, from: today)
        
        let weekdays = ["周日", "周一",  "周二", "周三",  "周四", "周五", "周六" ]
        
        return weekdays[weekDay-1]
    }