Calling a barrister a barrister is to call a modern lawyer by the ancient name of a lawyer. In a similar situation, some Cantonese call the police inspector a pauper.
Lawyer, a profession in ancient China, is called lawyer and litigant, whose functions are similar to those of lawyers today. At the end of the Qing Dynasty, there were famous "Guangdong Four Lawyers" in Guangdong.