What is countdown?

If it refers to the length of recording time, it is an "anti-day" APP, which can not only set the number of days from the target day, but also record how long the important day has passed.

You can also change different styles on it, and you can also mark particularly important days. Couples usually use it to record anniversaries and various festivals about couples. If you learn to bully, you usually use it to record exams for several days.

There are many similar apps now, but the interface of this app is relatively simple and easy to use. Another function is to see the great events that happened today in history.

The phrase countdown comes from 1927 German fantasy feature film The Girl on the Moon. In this film, director Frith uses the lens of "9, 8, 7, ... 3, 2, 1" rocket to ignite.

This plan has been well received by rocket experts, who think it is very accurate, clear and scientific, which highlights that the time for rocket launch is getting less and less, giving people a sense of urgency before rocket launch. Since then, countdown has been widely used and has gone beyond the scope of use, becoming a word with strong applicability and wide scope of application.