-(NSString*)time:(NSString*)num{

    NSDateFormatter *inputFormatter = [[NSDateFormatter alloc] init];

    [inputFormatter setLocale:[[NSLocale alloc] initWithLocaleIdentifier:@"en_US"]];

    [inputFormatter setDateFormat:@"yyyyMMdd"];

    NSDate* inputDate = [inputFormatter dateFromString:num];

    

    NSDateFormatter *outputFormatter = [[NSDateFormatter alloc] init];

    [outputFormatter setLocale:[NSLocale currentLocale]];

    [outputFormatter setDateFormat:@"yyyy年MM月dd日"];

    NSString *str = [outputFormatter stringFromDate:inputDate];

    return str;

}