According to the National Defense Science and Industry Bureau, it is expected that around tomorrow 21:40 (GMT +8) the Chang’e-3 Lunar Rover will land on the moon through a soft landing. Before the landing, the Chang’e-3 will be busy with reconfirming the landing sensors and relevant data (such as the starting height and speed) to make final preparations for the soft landing.
When the height is reduced to 100 meter, the Chang’e-3 Lunar Rover will hover and enter into the final stage of landing during which the Chang’e-3 Lunar Rover will be all by its own as the ground control will be basically “powerless”. This period of time is called the “Black 750 seconds.” When the height is further reduced to 4 meter, the Chang’e-3 Lunar Rover will turn off the engine and land on the moon by free fall.
Source: Legal Evening News