In addition, I recommend you to take the Dalian Maritime Code. The maritime merchants here are the ancestors of the whole country, and there are a number of famous teachers. Although it is not well-known in the legal field, it is well-known in the shipping field, such as Guo Ping, Li Zhiwen and Han Lixin, lawyers, Li Hai, Lin Peng Griffin and Wang Pengnan, judges, presidents of maritime courts and judges of the Fourth People's Court of the Supreme Court. I am from Dalian Maritime and graduated with a master's degree this year. If you want to enter Dalian, I can give you advice.
English is very important. CET-6 is nothing, it is better to be TEM-8, because most of the laws, cases and conventions you usually come into contact with are in English. If you don't want to learn English, don't learn maritime business, otherwise it will be too late.
Finally, I wish you success in the postgraduate entrance examination