C1998 Moon tide

Suddenly, when Cheng Fei opened his eyes again, the crescent moon in the sky had turned into a full moon.

Cheng Fei was shocked. It was true that the moon was clear and round, but these words were in accordance with its laws of nature. How could the moon just now have become a full moon?

Of course, what caused Cheng Fei's expression to change was not this, but in this boundless desert