I don't know how it compares to China, but in the UK becoming a pharmacist is difficult and expensive. In the UK to become a pharmacist you have to study an MPharm or Masters of Pharmacy, which is an undergraduate level integrated Masters (you don't need to have a bachelor's degree to apply directly to study the MPharm).
However it is
expensive. For international students it can cost £28,740 a year to study (over a period of four years). This only covers tuition fees - the cost of living in the UK has also gone up considerably, in my city in London it can cost £33,000 a year just to live here. Some other cities famous for their universities, like Oxford, Edinburgh, Manchester or Bristol are cheaper than London (London is most expensive), but there are few places in the UK that are "cheap" to live in. It is very common for international students to share rented accommodation to help pay for things!
The other thing to consider is
visas. In order to work and stay in the UK legally you need a visa, and in order to study in the UK you need a student visa. When you graduate, if you wish to work in the UK you will need to convert your student visa into a work visa, though this process is easier for people working in the National Healthcare Service, it is not guaranteed to happen! After graduating you then need to complete a foundational training year (you do get paid £25,000 for this at least), and if you pass the pharmacist's registration assessment, then you can work as a qualified pharmacist (making around £40,000-£60,000 a year). Also note that UK tax is very high, so if your salary is £60,000 - you would make £43,849.40 after tax ;[
If you decide to study something equal to Masters of Pharmacy in China, it is possible to work in the UK as a pharmacist. You can do this by passing
an overseas qualified pharmacists' assessment program, but be aware places on these courses are highly competitive. Generally speaking, most Western countries in the European Union/North America/Australia/UK/New Zealand should have similar systems where you can check what courses are "equivalent" to local pharmacy qualifications. Many times you can still work abroad using a Chinese degree, but you often have to pass more exams / get your degree recognised as equivalent / take a training year in order to practice pharmacy in that country, and each country usually has a different process. Some processes are easier, some are harder!
Also don't overlook scholarships, bursaries and company graduate schemes/sponsorship schemes. These are all highly competitive and super difficult to get (I have never met anyone who actually got one!) but if you can get one, they can save you a lot of money. Some company graduate or sponsorship schemes can also lead to employment straight after training.
Hope this was helpful!