How to locate the stars when watching the stars? Different places see different astrology. How do you know where it happened?

First find a "reference object" in the sky, such as the Big Dipper, which is very powerful and easy to identify, and is also suitable for locating other constellations. For example, it extends to both sides along the connecting line of two stars overhead, one is Leo, and the other is Polaris. You can find the big horn by extending downward from the two stars at the bottom of the spoon handle, so you can extend backward, and you can identify the stars that are easy to identify by combining the star map.

This picture was taken from Stellarium, that is, the mobile observatory, which is really useful.