You can choose either IELTS, TOEFL or GRE, but since you are an English major, you'd better provide the results of TEM-4 and TEM-8.
I have a question. Are you still applying for the postgraduate program related to English major?
If so, the minimum language I know requires IELTS score of 6, such as Chinese as a foreign language major, and other popular English majors had better score 7, otherwise it is not competitive, and the single subject is not less than 6.
It is best to have published papers, if any, which can be sent together with the submitted materials. Of course, the more famous newspapers and magazines you publish, the better. No, it really doesn't matter.
Some majors may need professional-related internship experience, which requires you to check the specific requirements on the websites of various schools (language scores are also different from school to school).
The basic application of research type cannot be applied.
Postgraduates in Hong Kong are all one-year students except medical students.
Tuition fees of various majors vary greatly. Basically, it can be said that the tuition fees of popular majors are higher. As far as I know, the tuition fees around me range from10,000 to 20,000 to 30,000, and the tuition fees fluctuate every year. I basically have to wait for your quotation to know the specific amount (my tuition is the average price, 75,000 HK, close to 70,000 RMB).
The cost of living also depends on your own consumption level. Generally, you should prepare at least 50,000+. It should be possible to save money to work, but renting a house there is very expensive (the school generally does not provide graduate dormitories).