In addition, seeing an idea on Zhihu can also make the landlord inspire children. You can put a planetary engine on the moon and then drag the earth forward by the gravity of the moon. The benefits of this include:
The flowing mantle of the moon does not have to worry about a series of problems that cause earthquakes.
The moon has no atmosphere and will not waste the energy of the propeller.
The stone burning the moon doesn't hurt. If the earth's stones are burned, even if the working medium is thrown out at a speed of 0. 1 times, the earth will lose 5% of its mass (there are definitely not enough stones in the crust).
Of course, there are also problems: the main thing is to control the orbit of the moon with high precision at all times, so that the earth can be dragged in the needed direction by gravity. If there is an engine in the film, the moon will either escape or fall directly to the earth. It is very unreliable to ensure that these problems will not occur in 2500.