Where did the wandering earth install the engine? Which side is always dark? According to the effect of the film, I ran away without the atmosphere of the solar system.

It is mainly installed in the equator and northern hemisphere of North America and Eurasia. The land in the southern hemisphere is too scattered. After the steering engine stops the rotation of the earth, adjust the angle of the earth axis so that the earth rotates up and down by about 90 degrees, and the south pole points to the front of the orbital revolution. At full throttle, the earth continues to accelerate along the orbit of revolution.