Huawei's mobile phone calendar is gone. How to recover?

Huawei's mobile phone calendar can be restored by deleting calendar data, as shown below.

Tools/raw materials: Huawei P50, HarmonyOS2.0.0, setting 1.0.

1. In the phone settings interface, click on the application and service.

2. In the application and service interface, click Application Management.

3. In the application management interface, select the calendar.

4. In the application information interface, select Storage.

5. In the storage interface, click Delete Data.