Google Calendar

Open Google Calendar web version at https://calendar.google.com/calendar/u/0/r?pli=1 and click Settings

Open Google Calendar settings

Select your target calendar (e.g. Chinese Holidays), find Integrate calendar, and copy the public URL of this calendar

Copy the public address in iCal format

Paste it into the URL field in the Google schedule feature

Enter the Google Calendar URL

Notes

Only today's events are displayed, up to the two most recent entries.
Data syncs automatically every 5 minutes.
Keep the device connected to the internet. After modifying events, click Save in Ulanzi Studio to refresh immediately.