Black body: square head and tail, and square shape.
Song dynasty: horizontal thin and vertical thick. There is a triangular corner on the far right side of the horizontal painting, which looks like a knife in the painting. It is also square.
The above are two types of calligraphy, and there are also variants, both of which are based on the above two fonts. I mean artistic fonts.
The following are the characteristics of various calligraphy:
Official script: The tuxedo is a portrait of a silkworm head, ending like a tuxedo. Relatively flat.
Regular script: also called real script, also called official script. Regular script written according to everyone's style is different. There are four typical ones, and their characteristic is Yan Liujing Valley. Zhao Ti is a little tied up.
It's really hard to say It's best to appreciate everyone's works more by yourself. After reading more, you will naturally know which school is which.