Crime of intentional homicide. Inquiring about the website of the law firm shows that the defendant Ni Tianzhen deliberately deprived others of their lives, causing one death, and his behavior has constituted the crime of intentional homicide. The crime of intentional homicide refers to the act of intentionally and illegally depriving others of their lives. Life is the basis and premise of exercising all other rights, and the life of any citizen is protected by law.