Watching the sky at night-guess the zodiac by breaking idioms?

Stargazing at night represents the zodiac mouse. Rats are nocturnal animals. They sleep during the day, come out at night, and observe the changes around them at night to ensure safety before they come out to look for food. The darker the sky, the bolder the mouse, and the more unscrupulous the action. They are born with the ability to watch the stars at night, they can move freely at night when they can't see their fingers, and they can also judge the southeast and northwest, so the night-time astrology refers to mice.