How to do the countdown software for mobile desktop?

You can refer to the following countdown methods for vivo mobile phones:

Countdown of atomic composition: 1. In the classic desktop, press and hold the blank space of the desktop to enter Desktop Edit-Atomic Component-Sticker-Long press "Countdown Sticker" to drag and add to the desktop, and then click Component-Set Target Date.

2. Explore sliding up in the desktop-Atomic component-sticker-long press "countdown sticker" to add it to the desktop, and then click on the component-set the target date.

Alarm clock countdown: Set the time to be counted and the reminder bell on the alarm timer of the mobile phone.

Calendar countdown: Click the "+"icon-click "..."-Add countdown-and set the event name, time, reminder mode, etc.