It mainly depends on your own perception of calligraphy and your skills. If you are good at your major, there is nothing you can do to pass the exam. Just learn the theory of calligraphy. The main professional skills are almost the same if you have been learning them since childhood. I know someone from Shandong University who majored in mechanical and electrical engineering. He has been studying calligraphy since he was a child. He even passed the postgraduate entrance examination and was admitted to the calligraphy graduate school of the China Art Institute. He is very good.