Fortune telling is about clouds.

In the fleeting time, "clouds open the sky and the moon" means that there are many clouds in the sky that cover a bright moon. Now that the clouds have cleared, the moon is appearing in the sky. It's time to symbolize good luck. The situation that used to be less than it is now is over. Similar poems include: the moon is bright at midnight, the moon is bright in front of the mountain and behind it, and the spring breeze is colorful. Wait a minute. Shun Song Qirui!