First of all, this is a signature. Some calligraphers or painters will have obvious autographs. Just look at the signature and you will know that it will be the work of the screenwriter.
After the preliminary judgment, we will make a detailed analysis based on some data:
The third point is material selection: it depends on the material of the work itself, according to what material was used at that time, such as paper for painting and calligraphy, what characteristics were there at that time, what characteristics were there when it was used for calligraphy or painting, and what painting and calligraphy culture was there at that time. We can analyze it from here.
The fifth point is to see whether the material of calligraphy and painting, the change of calligraphy ink and the change of seal color are reasonable after a certain period of time.
Ok, let's share it here today. If you have different opinions or better methods, please leave a message and discuss it together.