What does Huawei mate8 magazine mean by locking the screen?

Huawei mate8 magazine lock screen is introduced as follows:

Magazine screen locking is a unique screen locking method of EMUI, and you can enjoy different beautiful pictures every time you unlock it.

In the screen lock interface, slide upward from the bottom of the screen to open the shortcut operation panel of the magazine screen lock.

EMUI 5。 x:

EMUI 4。 x: