PKU's why only apply to Hong Kong universities. It is advisable to set your sights a little higher and apply for a master's degree in the US or UK. HKU is a traditional strong school, PKU is the rise in recent years, the two comparisons I recommend HKU. As for the specific details, it is recommended to look at their official website will be more clear, browsing the school website is also the first skill you need to learn to start applying.