ui->comboBox_2->addItems([]() -> QStringList {
        QDate date = QDate::currentDate();
        int current_year = date.toString("yyyy").toInt();
        QStringList year_list;
        for (int i = 0; i < 50; i++) {
            year_list << QString::number(current_year - (50 - i));
        }
        return year_list;
    });