What is the blue field in lol game? Where is Zifang? There better be

As the picture shows, the blue side is covered with blue and the purple side is covered with purple. On the whole, the blue side should have an advantage.

For example, it is generally more dangerous to play red BUFF in the wild. I think a lot of people were caught playing red BUFF when they were playing purple square, and then they went on their way. Blue can be given to GANK from the other side's wild side around the purple side. Generally speaking, there will be a little advantage in the blue side.