Based on the rank level of Chen's parents, I don't think they are so powerful that the case in Canada can be controlled.
The lawyers would like to defend Chen because they consider Chen would win this case in terms of their analysis. Obviously, Chen would get huge money if he won finally. Therefore, the lawyers don't worry about the benefit from this case. In this point, I trust the lawyers' analysis, so I believe Chen would win this case or he is not the real murder. No matter with "红朝".