I've been hearing a lot about Bitcoin and other cryptocurrencies lately, and I'm curious if they're legal in Hong Kong. I know that some countries have banned or restricted the use of cryptocurrencies, so I wanted to clarify the situation here. Can you provide some insight into the legality of Bitcoin and other cryptocurrencies in Hong Kong? Also, if there are any specific regulations or guidelines that apply to their use, I would appreciate it if you could share those with me. Thank you for your time and assistance.