It is difficult to generalize whether 300,000 RMB is enough for Hong Kong to study for one year. This mainly depends on the type of graduate program you choose, personal living expenses and other factors.

First, let's consider the tuition. Generally speaking, the tuition fee for master's programs in Hong Kong is between 654.38+10,000-200,000 RMB. If your major or project is expensive, you may have to pay a higher fee. In addition, if you need to take language classes or make up classes, it will also increase tuition fees.

Next is the living expenses. The cost of living in Hong Kong is relatively high, including daily expenses such as rent, catering and transportation. It is estimated that an international student may need 8000- 15000 RMB for living expenses every month. Of course, it depends on your lifestyle and consumption habits.

Besides tuition and living expenses, you need to consider some other expenses. For example, you may need to pay visa application fee, medical insurance fee, etc. Although these expenses are not very large, they need to be considered.

Based on the above factors, 300,000 RMB may or may not be enough to study in Hong Kong for one year, depending on your specific situation. If you can provide more detailed information, I can make a more accurate assessment for you.