1. The major banks in Hong Kong are HSBC and Standard Chartered, and other banks can also operate. My personal account in Hong Kong is opened in Standard Chartered Bank, because it is free to open an account there, and there will be almost no annual fee or other fees in the future. I don't know about HSBC, it should be about the same. However, many banks are not completely free. For example, if I go to China Construction Bank, you need to deposit at least HK$ 5,000 for free, otherwise a certain account fee will be charged every month. In addition, when opening an account, you need a Hong Kong and Macao pass, and it is best to bring a mainland ID card.

2. The account you handle can be USD or HKD or multiple currencies. However, if you charge a commission in the transaction, it is recommended that the account you open at least has the function of a US dollar account. My account is in US dollars and Hong Kong dollars.

3. To transfer money from Hong Kong (overseas) account to domestic account, you can transfer money to local bank or fax. Of course, the most convenient way is online bank transfer. You can open the online banking function when you open an account. After logging in to online banking, you can make cross-border transfer through the function of "overseas remittance". Of course, you need to obtain the specific bank information of the destination bank (your mainland bank), and you need to fill it out completely when you remit money online. This information includes: the name (bank of deposit), address and Swift code of the destination bank (this is an international banking system code of the bank, which is very important for identifying different banks). In addition, of course, you need to fill in your mainland account name and remittance amount. For the bank information mentioned above, you need to consult your local bank or call for advice.

I have typed all the above, I hope it will help you!