Large criminal cases are generally difficult to defend, and more interference by the state, the prosecutor's office can not afford to offend. And generally are well-known barristers to do. General cases and not very profitable, Qingdao, for example, "three three four" public security stage three thousand, the Procuratorate stage three thousand, the court stage four thousand. Total **** only ten thousand.
Constitutionalism is mainly to do research work and so on. The actual case is usually not specific to the case. If there is, it involves politics, so it's better not to do it.
Civil and commercial covers a wide range of general contract cases, commercial disputes, real estate disputes, intellectual property ...... and so on are civil and commercial cases. For example, intellectual property rights (copyrights patents trademarks, etc.) generally the subject matter is huge. And many foreign cases are also civil and commercial nature. Civil and commercial cases are generally in accordance with the proportion of commission, so generally speaking is the most profitable!
Another thing is that lawyers who do cases (litigation business) are generally not as rich as those who do non-litigation business, because the latter tend to have a lot of business such as corporate bankruptcy and restructuring, IPOs, etc., and these businesses are very lucrative.
The above is a little bit of their own experience, I hope you can refer to.