When Qin Mu and Bai Qu'er flew back from the outer skies, the sun had already extinguished.
The sun in the sky map was very punctual. Although there was no one controlling it, every twelve hours, the formation would automatically stop its operations.
By the time Qin Mu and Bai Qu'er returned, the moon had extinguished too. Even the hundreds and thousands of stars that formed the galaxy in the sky map had all extinguished at this time.
These stars and the moon were like the sun, every day, they would follow the cycle of lighting up and extinguishing once a day.
Qin Mu and Bai Qu'er had opened the sun formation carelessly, resulting in the simultaneous emergence of the sun and the moon and thus messing up its cycle of lighting up and extinguishing. Right now, the sun and moon were both extinguished.
Bai Qu'er brought Qin Mu and flew by the galaxy with rapid speed, her robes fluttering as they swept towards the galaxy and lit it all up.