I am studying in a place in San Francisco. I saw South Bay, North Bay and Mid-Peninsula online. How do you distinguish them? What place is that?

California is located on the west coast of the United States and has a vast territory. Americans call it the "Golden State", which means the Golden State. Some people also call it the Sunshine State because it is bathed in sunshine almost all year round. , except for the rainy season from the end of each year to the second and third months of the next year. Even in the rainy season, there are many sunny days. As mentioned in the previous paragraph, California is divided into Southern and Northern California, while the San Francisco Bay Area is located in the north-central part of California, like a bright pearl embedded in the center of the West Coast. Why is it called the Bay Area? It’s because there is a big bay in it, so the bay area is divided into North Bay, South Bay, East Bay and Peninsula (I don’t know why it’s not called West Bay, it’s strange). The closest county to North Bay is Marin County, which has cities such as San Rafeal and Sousalito. Many Chinese people don't know much about it, and there aren't many Chinese people there. Chinese people generally gather in San Francisco and cities to the south and east.