Problem description:
Fan calligraphy is beautiful, but it takes time to draw, especially the vertical grid in the middle of the fan, which is not easy to be accurate. What is a simple and accurate drawing method?
Analysis:
It is best to fold it in half after cutting, and see how many times it is appropriate according to the rules, so that there will be no traces after mounting; Of course, you can also draw the grid gently with a pencil.