Do I have to go to work if I get a lawyer's license?

No, they are all over the country. For example, if you practice in Beijing, you can also take cases from other places.

Supplementary answer: If you get the A certificate and practice certificate in Beijing, if you want to go to Guangzhou, it will definitely involve the transfer. As long as the formalities are complete, the original office agrees to let you go and the new office agrees to accept you, which should not be a problem. The lawyer's certificate is universal throughout the country, and there are no problems such as household registration restrictions.